Cheers True! I listened to the whole track and it got stuck in my head for a while.
I agree with scrubs - blending with a DI should give you a very useable sound. Something like a Morley switcher to split the signal:
http://www.samedaymusic.com/product--MLYABY
Hanging heavy blankets (moving blankets if you have them) in a "V" in front of the amp will help tighten, focus the ambience.
Watermelon asks a good question here - if you paint the basement a different color, you'll get a whole new bass-thumpin' vibe going.