With it you can organize your mp3 and ogg collections in a MySQL database easily, accessing mp3/ogg files on hard disk, cdrom, smb and NFS. Files can be played using XMMS, and can even be played when the files are on CD as prokyon3 identifies CDs by content.
prokyon3 also offers an editor for ID3 tags and has been designed to support tagging for multiple files en masse.