iTunesFS allows you to mount the "iTunes Music Library.xml" file as a file system, using the excellent MacFUSE. All playlists are exposed as directories, with their respective entries. Order of tracks within the playlists is maintained by prefixing the tracks with their playlist index.
What's new in this version:
brings back PPC support (made possible via changes to OSXFUSE, thanks to Benjamin Fleischer) and addresses a couple of internal issues. This version of iTunesFS has been tested on Mac OS X 10.5.8 and 10.8.