mimetype for grub module is audio/x-mod

Open Nautilus /boot/grub, the modules are declared as Amiga-SoundTracker-Audio. (screenshot)
To open a module the context menu advises Totem as default application which isn't expected.

Example.
:/boot/grub$ mimetype -a lsacpi.mod
lsacpi.mod: audio/x-mod
lsacpi.mod: application/x-object
lsacpi.mod: application/octet-stream

~$ xdg-mime query default audio/x-mod
totem.desktop

~$ gvfs-mime --query audio/x-mod
Default application for 'audio/x-mod': totem.desktop
Registered applications:
 totem.desktop
Recommended applications:
 totem.desktop

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: shared-mime-info 1.0-0ubuntu4.1
ProcVersionSignature: Ubuntu 3.2.0-27.43-generic 3.2.21
Uname: Linux 3.2.0-27-generic x86_64
ApportVersion: 2.0.1-0ubuntu11
Architecture: amd64
Date: Mon Jul 30 20:06:05 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120204)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: shared-mime-info
UpgradeStatus: No upgrade log present (probably fresh install)