I just pushed an update to the music extension. It should be available for download in a few hours.
-Added partial Spotify support (Accessibility must be enabled for this extension. Prefs -> Enable Accessibility)
-Added pause icon to show when playback is paused and 'Show When Paused' is enabled
-Added com.android.vending.BILLING permission for optional donations (in app purchase). This extension will always be 100% free but donations are welcome.