Not to be a total dick and I hope this doesn't come accross as spaming but surely this is another one of those issues that CUE file support would fix
http://nolanparty.com/mediaportal.sourceforge.net/phpBB2/viewtopic.php?t=2825
http://nolanparty.com/mediaportal.sourceforge.net/phpBB2/viewtopic.php?t=2825