It just stopped sending audio, but I know something's changed. I have tested the firewire, re-booted, I have a Sony Vaio P4 with 2GH, going to a Sony VX1000. Settings seem all correct, i.e., 16 bit, 48 hz, Microsoft Sound Mapper the device (which I have always used. I did delete some programs yesterday to make space, but what could I have deleted to cut off the audio from the firewire. Get sound on the computer sound system--none in my camer and none in the monitor attached to my camera, of course. Anybody have any ideas? TIA, Burt