Here's the latest version of MyTunesRSS from Michael Descher. MyTunesRSS is a Java program that lets you access your iTunes library through a local network or through the internet. The program uses a simple web interface to let you download songs. Since the program is based on Java, it can be run on any platform supporting Java 1.5, including the PSP (if your PSP has the Java program)

The program allows you to download anywhere from a single song, to playlists, and even to whole albums. The program is free but it has limitations. For EUR 15 (about US$ 21) you can unlock the full version. The locked version will only be able to access one computer at a time while the full version can run on multiple servers.