Info 2 [REQ] Set Stream_Music as Default when adjusting volume

too difficult for me to understand the smali things
anyone could make it for T/TX/V?
i think all the stuff is in framework.jar
keep expecting !
Sony Xperia TX [LT29i] ,
Jelly Bean 4.3,
9.2.A.1.199, Stock, Deodexed,
1266-5813_R3J,
Relocked BootLoader.