I have been trying the new leaked ICS Version today and i have had issues with rooting, so i changed back to stock rom, then changes BB to LPG990AT-00-V28e-EUR (wich came with leaked new ICS-Rom) and gave the last nightly JB another try. Til now i have no problems, everything works finde - audio too. I hope this wont change... Ok, it´ll need a few days to know more and be sure.
I hope so...