I wrote a little article about my iTunes module, and it looks like I may have included much more code than any Mac person might have expected. MacTech as a lot of code, but it usually isn't Perl (although Rich Morin writes for them).
Most of this article came out of my Perl talk at the Mac OS X Conference. Imagine setting up a web interface to your personal iTunes then letting the audience use it. I tried to get them to raise their hand to claim control, but to no avail. The Wireless Mac talk attendees next door got to listen to blurts of Frank Sinatra, Scottish folk tunes, and whatever else I had. I guess I should check the speaker levels next time I do that.