In delete mode only one sample can play at a time.
Obviously you can't record in delete mode, so, what this is good for:
1. If you are recording to another device/sampler acts as a mute group (cool if you are rocking 2 sp's)
or
2. Trying out samples before marking/chopping
Dunno, kinda limited use but it was fun to play about with anyway, try it! (but make sure you don't delete all your shizz by accident
Edit: http://www.youtube.com/watch?v=K-xHtt3Ncyc
