Updgraded from a 2001 Win ME pc to a Win 7 - and when I record new BIAB tunes - the sound is VERY different... guitars are way louder, and the overall tone sounds thin (more treble/less bass) when played live at a gig... is this due to the difference in sound cards? I got this new PC mainly to improve the BIAB sound/speed - but so far I like my old sound better.... Do I need to re-record all my BIAB files on the new PC and make the necessary adjustments?