Thanks @maxmp for the hard work, it looks great! And thanks for 5 star rating, it's more practical for me. ??
I had two problems:
1. Every time I use Queue for the second time after opening app, it shows wrong song numbers and it crashes and I have to wait for a crash report or force stop the app to be able to use it again. (I sent a couple of them via email today)
2. Every time I pause from the app, it closes the notification both in notification bar and lock screen. I think it's more practical if the notification closes when the user closes the app by recent apps list.