After playing with my iBook G4, another iBook G4, and a MacBook I've come to the conclusion that Macs won't let you recognize any external audio source if there's already a source in the firewire jack...can someone please confirm or give me another option for recording a high-quality webblog video with my Canon ZR700 and audio technical lavalier? iMovie has no problem seeing the video...no problem with the audio - WHEN YOU CLICK MEDIA (audio only recording) but when you click video capture it says to itself (I speculate)..."you plugged in a firewire device and regardless that you choose the USB audio input in the control panel I will get the sound from FWire". Why? Because when I use the internal iSight it absolutely does capture the external USB audio but when you plug in an external iSight into the Firewire it only uses the audio from the FW. ((And in fact I even found a quote from iMovie 1.0 that says this..."iMovie controls and captures audio and video over this single wireâ??no more cable clutter."...think it's still the same deal in iMovie 6?)) http://www.apple.com/imovie/imovie1.html So is this right or am I just going crazy for nothing (because Apple says there should be no problem using different sources for audio and video but darn if I can make it work... ....oh, and by the way, I've now bought two Canon camcorders because Canon conveniently doesn't tell you that the external audio only works on playback (to narrate) and not when you record (as a webcam). Canon says "We never said these items could be used as webcams...you didn't ask us that!" but guess what...when I asked them "Can I use an external mic when I record?" they said "yes...both the zr500 and zr700 can do that...one has an external mic and the other has external a/v in". Thanks Canon.