It turns out this was only happening for me with .m4a files. I found the following at http://forums.fedoraforum.org/showthread.php?p=1522863 which fixed the problem for me:
"If anyone else is having a problem like this, you can try deleting $HOME/.gstreamer-0.10/registry.x86_64.bin (then quit/restart any gstreamer apps that are having issues)." -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/508896 Title: Search for suitable plugin dialog useless To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/banshee/+bug/508896/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs