So I'm considering buying an Xbox 360 and have it setup in my room. I have speakers that I want to use for both my computer and xbox without having to switch around the wires every time I switch devices. The speakers use the 1/8" TRS jack while the Xbox would use RCA or S/PDIF. How can I plug the audio from the xbox into my Macbook Pro(Unibody) so I don't have to move wires around? I probably need a toslink cable and a connector like this? Do I need to do anything special to tell my computer to spit out the input sound? Secondly...I can use my MBP as the wireless hub for the Xbox through the ethernet port and "share internet" settings right? Can I use a normal ethernet cable or do I need to get a crossover cable?