Dot-Tunes, the ultimate iTunes web server

If you'd like to share your iTunes tracks with other computers in the office, down the block or across the web, Dot-Tunes looks like one of the simplest iTunes web servers I've seen yet. (For music you own the copyrights to, of course.) Their software has an easy setup process for choosing which artists and tracks are shared and, once activated, anyone can get to your music via http://your_ip:9999, and their support page has simple instructions on enabling port forwarding for those of you with firewalls in place. There's even a simple monitor for which tracks are being shared and to whom.

Dot-Tunes has a demo available, though I can't find how long it actually lasts. It sells for $29 Australian dollars, which my Unit Converter widget says is just over $21 USD.