I got a G4 iBook. On my desk at work I have a set of Boston Digital BA 735 speakers that are plugged into my Gateway computer. I sorta thought I could take the speaker cable, plug it into my headphone jack, and whammo, it would work. It does not. I even tried a 1/4 mono to stereo adapater. Still not working. I did some Google searching and found that these speakers may require a "digital soundcard" or something of the sort. Lots of talk about drivers as well. Anyone have any experiance with these?