Fix design

lib/components/audio_player.dart

@@ -102,9 +102,9 @@ class _AudioPlayerState extends State<AudioPlayer> {
       mainAxisSize: MainAxisSize.min,
       children: <Widget>[
         Container(
-          width: 40,
+          width: 30,
           child: status == AudioPlayerStatus.DOWNLOADING
-              ? CircularProgressIndicator()
+              ? CircularProgressIndicator(strokeWidth: 2)
               : IconButton(
                   icon: Icon(
                     flutterSound.audioState == t_AUDIO_STATE.IS_PLAYING
@@ -121,13 +121,15 @@ class _AudioPlayerState extends State<AudioPlayer> {
                   },
                 ),
         ),
-        Slider(
+        Expanded(
+          child: Slider(
             value: currentPosition,
             onChanged: (double position) =>
                 flutterSound.seekToPlayer(position.toInt()),
             max: status == AudioPlayerStatus.DOWNLOADED ? maxPosition : 0,
             min: 0,
           ),
+        ),
         Text(
           statusText,
           style: TextStyle(