Changing Tracks using Volume Buttons

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Hello,
I really would like to change the function of the volume keys to skip to next or previous track by longpressing it. I got a hint how to do it, but I don't know how to adapt it to the S3:

you need to change the system command for these Volume keys
open up your Root file explorer & change the system to Read/Write--
navigate to System>usr>keylayout>mecha-keypad-vo.kl
and
System>user>keylayout>mecha-keypad.kl
open each in text editor by long pressing the file--
Look for the line "VOLUME_UP" and replace "WAKE" with "MEDIA_NEXT"
then, on "VOLUME_DOWN",replace command "WAKE" with "MEDIA_PREVIOUS"

*(note--this also removes your ability to change the VOLUME higher or lower using these keys--i'm just showing you all options)

Problems:
1. I can't find these kl files on my S3. The quoted guide was for a Verizon HTC Thunderbolt so can anyone tell me which are the files which need to be changed on the S3 in the given folder?
2. As it says in this guide, by applying these changes to the keychar layout the function to increase and decrease volume with the buttons gets lost. This is not what i want, obviously it should change the volume on short press.

Thanks for your help.

Cheers

Doesn't cm have that function? Maybe that could help u?

Sent from my GT-I9300 using Xparent ICS Blue Tapatalk 2

Yes they have it, but I don't know how to find the developer which actually did this

Hi folks. I am really interested by this awsome feature and have been digging for hours. Found the same solution with the 2 files (not the one you mentioned though), found the files, edited the files according to fellows advice, and ... nothing
Has any one ideas? Did I do something wrong?

Power Amp supports this function and IMO it is the best music player available.

With Poweramp or player pro this feature doesn't work with Galaxy S3.

Does anyone knows why?