I wrote the scrip it has nothing to do with a script like I said in my original post. /run would only launch the default program for handling mp3's which in my case is winamp and both winamp and mediaplayer plays mp3's without any weird distortion in sound.
Isn't there someone here who would actually know how mIRC plays the mp3 files? I'm starting to think mIRC has it's own built in codec, could I be right about that?
Before you dismiss that thought let me say that uninstalling all my mp3 codecs didn't do anything, mIRC still played (unlike mediaplayer) and still with the weird distortion.
Come on, don't make me try and mail khaled