diff --git a/pubspec.lock b/pubspec.lock
index 3ea0b44..e039943 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -5,136 +5,119 @@ packages:
     dependency: transitive
     description:
       name: async
-      sha256: bfe67ef28df125b7dddcea62755991f807aa39a2492a23e1550161692950bbe0
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.10.0"
+    version: "2.9.0"
   audioplayers:
     dependency: "direct main"
     description:
       name: audioplayers
-      sha256: "16451eab798b23ad9307aef6f9ca62bb8fb06542af8810eead0d236d3fd40a42"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "3.0.1"
   audioplayers_android:
     dependency: transitive
     description:
       name: audioplayers_android
-      sha256: b2c833e6f718b6b030454e329931229afafe9327fdb002874dd544dc8bf2484d
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.0"
   audioplayers_darwin:
     dependency: transitive
     description:
       name: audioplayers_darwin
-      sha256: e7a3c8759bf11ecfe4b20df338bf9f3d37c7719a5761c46a3833aba0ceeaacff
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "3.0.1"
   audioplayers_linux:
     dependency: transitive
     description:
       name: audioplayers_linux
-      sha256: e95b65e1f4d4764601dac5e65f8d8186fc29401043ab020f1dacec483d708707
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.4"
   audioplayers_platform_interface:
     dependency: transitive
     description:
       name: audioplayers_platform_interface
-      sha256: "178581a44cb685fd798d2108111d2e98cca3400e30b9c3a05546f124fb37f600"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "4.0.0"
   audioplayers_web:
     dependency: transitive
     description:
       name: audioplayers_web
-      sha256: "859ba09be2a57e57a787273f18c8cf0d9b61383870c5ee4b5632fe9adbc37edf"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.2.0"
   audioplayers_windows:
     dependency: transitive
     description:
       name: audioplayers_windows
-      sha256: "622e01c4c357c2aaf1b956c3a0f89d97c3cb40315c03f16e3b6c2a31ff9c38bc"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.3"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
-      sha256: "6cfb5af12253eaf2b368f07bacc5a80d1301a071c73360d746b7f2e32d762c66"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.1"
+    version: "2.1.0"
   characters:
     dependency: transitive
     description:
       name: characters
-      sha256: e6a326c8af69605aec75ed6c187d06b349707a27fbff8222ca9cc2cff167975c
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "1.2.1"
   clock:
     dependency: transitive
     description:
       name: clock
-      sha256: cb6d7f03e1de671e34607e909a7213e31d7752be4fb66a86d29fe1eb14bfb5cf
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.1"
   collection:
     dependency: transitive
     description:
       name: collection
-      sha256: "4a07be6cb69c84d677a6c3096fcf960cc3285a8330b4603e0d463d15d9bd934c"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.17.1"
+    version: "1.16.0"
   crypto:
     dependency: transitive
     description:
       name: crypto
-      sha256: aa274aa7774f8964e4f4f38cc994db7b6158dd36e9187aaceaddc994b35c6c67
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "3.0.2"
   cupertino_icons:
     dependency: "direct main"
     description:
       name: cupertino_icons
-      sha256: e35129dc44c9118cee2a5603506d823bab99c68393879edb440e0090d07586be
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.5"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
-      sha256: "511392330127add0b769b75a987850d136345d9227c6b94c96a04cf4a391bf78"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.1"
   ffi:
     dependency: transitive
     description:
       name: ffi
-      sha256: a38574032c5f1dd06c4aee541789906c12ccaab8ba01446e800d9c5b79c4a978
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.1"
   file:
     dependency: transitive
     description:
       name: file
-      sha256: "1b92bec4fc2a72f59a8e15af5f52cd441e4a7860b49499d69dfa817af20e925d"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "6.1.4"
   flutter:
@@ -146,8 +129,7 @@ packages:
     dependency: "direct dev"
     description:
       name: flutter_lints
-      sha256: aeb0b80a8b3709709c9cc496cdc027c5b3216796bc0af0ce1007eaf24464fd4c
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.1"
   flutter_test:
@@ -164,200 +146,175 @@ packages:
     dependency: transitive
     description:
       name: http
-      sha256: "6aa2946395183537c8b880962d935877325d6a09a2867c3970c05c0fed6ac482"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "0.13.5"
   http_parser:
     dependency: transitive
     description:
       name: http_parser
-      sha256: "2aa08ce0341cc9b354a498388e30986515406668dbcc4f7c950c3e715496693b"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "4.0.2"
   js:
     dependency: transitive
     description:
       name: js
-      sha256: f2c445dce49627136094980615a031419f7f3eb393237e4ecd97ac15dea343f3
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.6.7"
+    version: "0.6.4"
   lints:
     dependency: transitive
     description:
       name: lints
-      sha256: "5e4a9cd06d447758280a8ac2405101e0e2094d2a1dbdd3756aec3fe7775ba593"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.1"
   matcher:
     dependency: transitive
     description:
       name: matcher
-      sha256: c94db23593b89766cda57aab9ac311e3616cf87c6fa4e9749df032f66f30dcb8
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.14"
+    version: "0.12.12"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
-      sha256: d92141dc6fe1dad30722f9aa826c7fbc896d021d792f80678280601aff8cf724
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.0"
+    version: "0.1.5"
   meta:
     dependency: transitive
     description:
       name: meta
-      sha256: "12307e7f0605ce3da64cf0db90e5fcab0869f3ca03f76be6bb2991ce0a55e82b"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.9.0"
+    version: "1.8.0"
   mobile_scanner:
     dependency: "direct main"
     description:
       name: mobile_scanner
-      sha256: "4045e8441e21f1fb8998a76fbffd054510dd3a3b1dee55c7c9a2083eee687345"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "3.0.0"
   path:
     dependency: transitive
     description:
       name: path
-      sha256: "8829d8a55c13fc0e37127c29fedf290c102f4e40ae94ada574091fe0ff96c917"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.3"
+    version: "1.8.2"
   path_provider:
     dependency: transitive
     description:
       name: path_provider
-      sha256: dcea5feb97d8abf90cab9e9030b497fb7c3cbf26b7a1fe9e3ef7dcb0a1ddec95
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.12"
   path_provider_android:
     dependency: transitive
     description:
       name: path_provider_android
-      sha256: a776c088d671b27f6e3aa8881d64b87b3e80201c64e8869b811325de7a76c15e
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.22"
   path_provider_foundation:
     dependency: transitive
     description:
       name: path_provider_foundation
-      sha256: "62a68e7e1c6c459f9289859e2fae58290c981ce21d1697faf54910fe1faa4c74"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.1"
   path_provider_linux:
     dependency: transitive
     description:
       name: path_provider_linux
-      sha256: "2e32f1640f07caef0d3cb993680f181c79e54a3827b997d5ee221490d131fbd9"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.8"
   path_provider_platform_interface:
     dependency: transitive
     description:
       name: path_provider_platform_interface
-      sha256: f0abc8ebd7253741f05488b4813d936b4d07c6bae3e86148a09e342ee4b08e76
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.5"
   path_provider_windows:
     dependency: transitive
     description:
       name: path_provider_windows
-      sha256: bcabbe399d4042b8ee687e17548d5d3f527255253b4a639f5f8d2094a9c2b45c
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.3"
   platform:
     dependency: transitive
     description:
       name: platform
-      sha256: "4a451831508d7d6ca779f7ac6e212b4023dd5a7d08a27a63da33756410e32b76"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "3.1.0"
   plugin_platform_interface:
     dependency: transitive
     description:
       name: plugin_platform_interface
-      sha256: dbf0f707c78beedc9200146ad3cb0ab4d5da13c246336987be6940f026500d3a
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.3"
   process:
     dependency: transitive
     description:
       name: process
-      sha256: "53fd8db9cec1d37b0574e12f07520d582019cb6c44abf5479a01505099a34a09"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "4.2.4"
   shared_preferences:
     dependency: "direct main"
     description:
       name: shared_preferences
-      sha256: "5949029e70abe87f75cfe59d17bf5c397619c4b74a099b10116baeb34786fad9"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.17"
   shared_preferences_android:
     dependency: transitive
     description:
       name: shared_preferences_android
-      sha256: "955e9736a12ba776bdd261cf030232b30eadfcd9c79b32a3250dd4a494e8c8f7"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.15"
   shared_preferences_foundation:
     dependency: transitive
     description:
       name: shared_preferences_foundation
-      sha256: "2b55c18636a4edc529fa5cd44c03d3f3100c00513f518c5127c951978efcccd0"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.3"
   shared_preferences_linux:
     dependency: transitive
     description:
       name: shared_preferences_linux
-      sha256: f8ea038aa6da37090093974ebdcf4397010605fd2ff65c37a66f9d28394cb874
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.3"
   shared_preferences_platform_interface:
     dependency: transitive
     description:
       name: shared_preferences_platform_interface
-      sha256: da9431745ede5ece47bc26d5d73a9d3c6936ef6945c101a5aca46f62e52c1cf3
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.0"
   shared_preferences_web:
     dependency: transitive
     description:
       name: shared_preferences_web
-      sha256: a4b5bc37fe1b368bbc81f953197d55e12f49d0296e7e412dfe2d2d77d6929958
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.4"
   shared_preferences_windows:
     dependency: transitive
     description:
       name: shared_preferences_windows
-      sha256: "5eaf05ae77658d3521d0e993ede1af962d4b326cd2153d312df716dc250f00c9"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.3"
   sky_engine:
@@ -369,90 +326,79 @@ packages:
     dependency: transitive
     description:
       name: source_span
-      sha256: dd904f795d4b4f3b870833847c461801f6750a9fa8e61ea5ac53f9422b31f250
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.9.1"
+    version: "1.9.0"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
-      sha256: c3c7d8edb15bee7f0f74debd4b9c5f3c2ea86766fe4178eb2a18eb30a0bdaed5
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.11.0"
+    version: "1.10.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
-      sha256: "83615bee9045c1d322bbbd1ba209b7a749c2cbcdcb3fdd1df8eb488b3279c1c8"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.1"
+    version: "2.1.0"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
-      sha256: "556692adab6cfa87322a115640c11f13cb77b3f076ddcc5d6ae3c20242bedcde"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.1.1"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
-      sha256: a29248a84fbb7c79282b40b8c72a1209db169a2e0542bce341da992fe1bc7e84
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "1.2.1"
   test_api:
     dependency: transitive
     description:
       name: test_api
-      sha256: "6182294da5abf431177fccc1ee02401f6df30f766bc6130a0852c6b6d7ee6b2d"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.18"
+    version: "0.4.12"
   typed_data:
     dependency: transitive
     description:
       name: typed_data
-      sha256: "26f87ade979c47a150c9eaab93ccd2bebe70a27dc0b4b29517f2904f04eb11a5"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.1"
   uuid:
     dependency: transitive
     description:
       name: uuid
-      sha256: "648e103079f7c64a36dc7d39369cabb358d377078a051d6ae2ad3aa539519313"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "3.0.7"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
-      sha256: "80b3257d1492ce4d091729e3a67a60407d227c27241d6927be0130c98e741803"
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.4"
+    version: "2.1.2"
   win32:
     dependency: transitive
     description:
       name: win32
-      sha256: c9ebe7ee4ab0c2194e65d3a07d8c54c5d00bb001b76081c4a04cdb8448b59e46
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "3.1.3"
   xdg_directories:
     dependency: transitive
     description:
       name: xdg_directories
-      sha256: ee1505df1426458f7f60aac270645098d318a8b4766d85fde75f76f2e21807d1
-      url: "https://pub.dev"
+      url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.0"
 sdks:
-  dart: ">=2.19.0 <4.0.0"
+  dart: ">=2.18.2 <3.0.0"
   flutter: ">=3.0.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index 3f78ee1..58445b3 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -39,7 +39,6 @@ dependencies:
   audioplayers: ^3.0.1
   mobile_scanner: ^3.0.0
 
-
 dev_dependencies:
   flutter_test:
     sdk: flutter
@@ -63,14 +62,14 @@ flutter:
 
   # To add assets to your application, add an assets section, like this:
   assets:
-    - beep.mp3
-    - go.mp3
-    - workout.mp3
-    - warmUp.mp3
-    - cool_down.mp3
-    - finish.mp3
-    - group1.json
-    - group3.json
+    - assets/beep.mp3
+    - assets/go.mp3
+    - assets/workout.mp3
+    - assets/warmUp.mp3
+    - assets/cool_down.mp3
+    - assets/finish.mp3
+    - assets/group1.json
+    - assets/group3.json
   #   - images/a_dot_burr.jpeg
   #   - images/a_dot_ham.jpeg