Sharing iTunes Library among multiple users
Natalie and I use our 12" Apple Powerbook almost exclusively for home computing. The MP3 library that I brought to our relationship consists of about 36 gigabytes of music. We both have iPods, and wanted to sync them to a single library. Unfortunately, iTunes didn't support this out-of-the-box.
My UNIX experience told me that we could move the music files to a commonly-accessible directory and have each of our iTunes instances reference the files in that directory. That was cool, but it didn't address the problem of changing file contents. If I updated the name of a file, the change would not be reflected in Natalie's iTunes library. This sounded like a big inconvenience.
So, I settled on both of us having symbolic links to a single iTunes library. If one of the changed the name of a file, added new songs, etc., it would be reflected in the other's library. Perfect.
I found a couple of resources on the web that draw the same conclusion (http://captnswing.net/howto/itunes/). Hopefully others will have similar success!