You could nuke all of your dynamic data (this includes EQ, tuner, playlists and bookmarks), with the following:
$ dd if=/dev/zero of=/dev/hda3
Make sure that you get this exactly right, or you might end up nuking your music. You can check that you've got the right partition by doing:
$ fdisk -l /dev/hda
The dynamic data partition is the one labelled as "OPUS"
This information comes without any warranty, either express or implied. Use at your own risk. Your home may be at risk if you do not keep up payments on a mortgage or other loan secured on it.
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roger