I'm also looking for an alternative music player. I know there are lots out there. But to be specific it has to have a custom equaliser that i can control within the app and the usual ability to add a playlist, add songs, edit a Playlist, etc.
Many thanks.
Spotify does this and a lot more, but I'm assuming you want a music app for your purchased tracks. TuneShell is the closest I could find to your requirements.