The concept behind the card is that there is no track arming or assigning required ever. The uTrack-X32 is designed to be a hassle and worry free bullet proof system. With today’s affordable hard drives memory shouldn’t be an issue. Simply delete the tracks you don’t need after importing them. I’m sure you would be far more upset if you used the uTrack-X32 and didn’t record the bass guitar…hope this helps clarify things.