Does anyone know of a good program where I can isolate a vocal track to use in a remix thing along the lines of The Legion of Doom's work?
Um i dont know of one, mainly cause it's not an easy thing to do, it mainly involves EQ ing the track until your left with jst the vocals. however the snare drum and other instruments sit in the same EQ range
Speaking of acapella...
I heard The Legion of Doom managed to get hold of some of the vocal tracks but in some if you listen carefully you can hear that they've just tried to isolate the vocals, probably using the EQ method. I can't think of any other way.