This is pretty weird given that they appear in itunes with all the accompanying information. Seems as if somewhere down the line the metadata has gone awol which is why they end up at the bottom of the server essentially unclassified…
Aha! Where is your iTunes Music Library.xml file? Still in ~/Music?
If so, go into the web interface and add /Users/you/Music to your mp3_dir paths. (so it has *both* paths).
Then tell it to rescan, and it should merge the metadata.
Oh. And make sure the “process m3u” setting is set to “yes” also.