I know that one way a lot of stations use is tools like the Adtec Edje, which streams MPEG2 from a video source. You'd take your modul8 output, feed it in as analog video, and it encodes and streams full-res MPEG2 in real time.
Search doesn't seem to be working well on the forum...
I'd like to know if M8 has been tested on a quad G5 with the big 512meg video card. I'm interested in purchasing one of those machines but want to be sure it will rock-out with M8.