I think you have to write the music player name that you are using. Im using Omich player, (fast and simple) and it appears as "Music" in app drawer.How Is That Possible??
It Is Supposed To Only Disable The Button Not Assign To Another Application!!
That Is A Problem I am Unable To Solve.
Idk, just suggestion.. But now walkman button works very good. It opens my music player.
I deleted, fusion player and stock player and replace with Omich Player. Try Omich man. Its basic and uses equalizer that comes with the rom which is Viper. Music is now perfect for me!
Sent from my Xperia Live With Walkman using xda app-developers app