I've been trying rather vainly in the last couple of days to come up with a useable alternative to the standard audio output that my Powerbook G4 15" lacks for a reasonable but budget speaker system. I'm a University student and may be hard pressed to afford anything over $100. Entering into that $100 is of course some way to connect a set of speakers to my Powerbook. Are there inexpensive line audio converters that can change audio signals to USB or firewire? Is there such a thing? If so, would firewire have more bandwidth (better audio quality) than a USB connection? I've looked at the Apple Pro Speakers, and the about-to-ship Griffin iFire. They look exceptional, but I am somewhat skeptical about purchasing a pair of speakers without a subwoofer. How good are these little babies really? They look spiffy, and I don't need a lot of power, just enough to fill a claustrophobic dorm room. Still, if the difference in audio quality is negligible from what I'm used to, which is simply an inexpensive pair of headphones from Aiwa, then it may not be worth the extra expense considering I'm probably ultimately going to end up irritating my roommate with them. Help me find some stylish, good quality, and inexpensive speakers for my Powerbook and a solution to the audio out problem, and I will be very grateful.