If I understand your question, there is no way of "extracting" the bass out of a song/sample without some serious damage to its overall quality. If its already mixed down to stereo all you can do is grab a general area of low frequency and get an idea of what the bassline is with a lot, say, let's call it leakage...and a bad sounding bass. But hey, if it works for what youre trying to do with it, then by all means... :)

yeah i kept playing with it and kind of figured that out. i got it sounding ALRIGHT, to the point where it was usable in my application. thanks a lot for the reply!