shadow.8 helped track down a long-lasting bugs for shared media. Thanks! I've uploaded a new version (0.7.24c) that should fix this.
The links are the same as above, so if you're already using MusicCabinet 0.7, you can just replace your subsonic.war with http://dilerium.se/musiccabinet/subsonic.war and stop/start Subsonic.
Otherwise, install Java 7 and then use:
Windows users: http://dilerium.se/musiccabinet/subsoni ... -setup.exe
Non-Windows users: http://dilerium.se/musiccabinet/subsoni ... dalone.zip
Tomcat users: http://dilerium.se/musiccabinet/subsonic-tomcat.war
it seems easiest to continue further discussion in the existing announcement thread: viewtopic.php?f=11&t=11787