I managed to get official ICS Xperia Arc S's Music app working on non-xperia devices like Samsung/HTC. I also added DSP Manager for people who want CM9 DSP. However, there's bug with black background causing text invisible. Tried fixing uxpres/semcgenericuxp/etc. Would be appreciated if someone can guide me to fix this.
EDIT: I found few clues in build.prop indicating xperia frameworkk mod is required to get this working properly
I tried adding this but it didn't fix the problem. Looks like I need to look more.