Reinstalling codecs didn't work.
Running that i get "Windows cannot find regsrv32...".
I noticed the cue window becomes corrupted with whatever was in front of it before the error comes up.
I believe this could be cause by bad codecs somehow, i'll try reinstalling my codec pack (K-lite), and report back. This just started happening, the last thing i remember doing to my system is installing Ati Catalyst 9.1.