Nick, I'm starting to have this issue too... last week I tried recording for the first time with 1.6, everything always worked fine with 1.5...... my only conclusion is I broke it. TTM57 - using aux out ME 1.6 MBP 13", 2.4GHz, 4Gig DDR3, 128Gig Solid State HD I know to switch the port to input instead of output, and check the input level meter.. Now after exporting I have about 5 mins of audio and synced video, then it goes to good video with no audio. If it wasn't working at all it would make more sense... but Im just clueless here... Like I said it always worked fine before, and I just haven't tried to record till last week with 1.6 personal email is "me@dvjflash.com"