Audio Question regarding WALKMAN

Hello,

I did some searches for the Sony WALKMAN app, that is compatible to my SGS4 mini, but none of them seems to be working flawless...
Sometimes the sound is crackling? or on other WALKMAN ports i get a force close, etc...

So, do someone of u out there know which port is is really working? I am currently on CarbonRom [4.4.2].
DEVICE: Samsung Galaxy S4 Mini (GT-I9195)
ROM: CarbonRom Unofficial [4.4.2], KERNEL: f4ktion 1.4.5
GOV: SmartassH3@1728, I/O: ROW