Works great on Power Mac. Then I purchased a new iMac 2009. installed the program. Nothing but problems on iMacs. Beware if you are using a iMac. Nothing but problems using the sound kernel from this program. Disk Utility removes it, and recorded video sound is very echoey. Developer took a few days to respond. After a few questions and emails the developer provided a work around with a 3rd party sound recording software. I am not very satisfied. Now I can not hear any sound when recording, but there is sound when I play back the video after I switch from one sound output to another. Anyone else having these kind of problems on newer iMac 2009 or more????