Hi tsgator:
Not sure If I can help on this one.
First I would check to see if your webcam had a mute button on it, it may be set to on.
Second I would make sure you have the latest drivers for your webcam, which you can download from there site.
Third I would try a diffrent USB port, some port conflict each other.
and Forth, I dont really have a forth. sorry.
Give those a try and If that does not help. repost with a new title in these forums and maybe some of the techs know what to do.
Glad you got both cameras running.
PS. there is a forth, check to make sure in your program icamsource, where you selected the cameras, just below the pull down for the cameras there is another pull down for the mics, try changing them around to see if it helps.
sOulbAit