ati tv wonder usb



My windows machine recently died. To replace it I've purchased (last night) a mac mini.

I used an ATI TV Wonder USB on my windows machine and I'd like to use it on the macintosh.

I know that the this hardware is compatable on the Mac because it is used by eyetv.

What I'd like to know is how to use this device. Do I need to purchase software for this? Is there GPL'd software available?