I recently upgraded one of my systems from kernel 2.6.39.4 to 3.4.4. both are custom complied kernels. With the new kernel some videos have problems playing with some players. Xine and mplayer don not work but VLC does. The major error message from both xine and mplayer is "Unable to open audio: No available audio device" Mplayer gives more information, the problem is any video that uses a AAC (MPEG2/4 Advanced Audio Coding) sound track fails (formats so far that do not work is flash video and MP4), other soundtracks appear to be OK, The actual failure appears to be caused by the sound driver not exepting the hw setup arguments from Xine and mplayer. It sort of appears in the latter kernel something has changed in the sound driver. A search on the net produced little information, only a single report stating simliar symptoms , the report being only a week old. Anybody know anything on this. BTW the system uses Debian 6.0.x