I have my Xbox 360 set up on my desk, because I play it on my Monitor (a 2405fpw). Haven't made the jump to HDTV yet, so this is my best option. On my pc, I had the audio from the 360 plugged into my pc's aux in audio jack, and it worked fine. When I saw that the mac pro had a line in, I assumed I would be able to do the same. Got the machine today, loving it so far, though I'm a bit lost (first mac in about 10 years). Only problem is, I realized that the line in on it is meant for, I assume, microphones only. In the audio control panel, I can see the input level jumping when the 360 is supposed to be making noise, so I know its being input correctly, but I can't figure out a way to output the audio to the speakers. Is this possible?