There is an earlier discussion on this.. under Modul8 Beta V2.5
near the end of a thread on:
"Modul8 top 20 wish list".
By using quartz composer, a usb camera, and a firewire camera..
you can have 2 live cameras... in Modul8.
See that discussion for details.
If anyone knows how to get more cameras in, I'd love to know how that is being done.
Hope this helps.
"Know your monkey"