If you have not heard of the iPhone, then it is time for you to get out of your cave. :) Anyway, I wrote about how you can use the iPhone on Linux a few days ago but today, here is an interesting tutorial on how you can from an iPhone without actually tethering it via its USB cable.
Just a word of warning, though. This only works with the old firmware version 1.0.2 (current is 1.1.1). However, the current 1.1.1 can now done this but I'd rather not recommend it until it has been fully unlocked. :) So, for the meantime, enjoy your music.