This sounds much like bug 952933, which was fixed a few days ago. The gvfs-mounts output shows that the media-player-info side is correct ("themed icons: [multimedia-player]"). Can you please update to the latest precise packages and check if this still happens?
** Changed in: nautilus (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nautilus in Ubuntu. https://bugs.launchpad.net/bugs/975133 Title: Sylvania SMPK4444 Mp3 player tries to open as Photo CD Status in “nautilus” package in Ubuntu: Incomplete Bug description: 11.10 Oneric Ubuntu 3.0.0-17.30-generic-pae 3.0.22 When the Mp3 player is connected via USB, the auto run window indicates that I have instered a "Picture CD" This is incorrect, however the MP3 player does have a camera, and can contain pictures. The Unity launcher identifies is as a 3.8 GB filesystem, and uses the MP3 player icon. Overall a very small bug.... but a bug never-the-less. I will test on the live Beta as well To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/975133/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp