✨ Volume slider

lib/providers/volume.dart

@@ -0,0 +1,20 @@
+import 'dart:async';
+import 'package:get/get.dart';
+import 'package:rhythm_box/services/audio_player/audio_player.dart';
+import 'package:rhythm_box/services/kv_store/kv_store.dart';
+
+class VolumeProvider extends GetxController {
+  RxDouble volume = KVStoreService.volume.obs;
+
+  @override
+  void onInit() {
+    super.onInit();
+    audioPlayer.setVolume(volume.value);
+  }
+
+  Future<void> setVolume(double newVolume) async {
+    volume.value = newVolume;
+    await audioPlayer.setVolume(newVolume);
+    KVStoreService.setVolume(newVolume);
+  }
+}