Comment 2 for bug 751610

I discovered this error was because the default music player was set to "custom" execute the command "banshee-1" (which was the name of banshee in versions found in the banshee PPA). This setting appears to be preserved on clean install (with a separate /home) so if a user moves from Maverick and -was- using the PPA the command "banshee-1" fails and thus Unity falls back to Totem to provide music playback functionality. Changing the settings in "preferred applications" to custom launch with the command "banshee" or simply selecting it from the list of preferred applications fixes the problem. Though this preserving of an outdated application name/command in "prefered applications" is still a concerning issue I would think.