Do you really want to DELETE the internal sounds? Or do you just want to stop them from loading when you power it on? Two different questions!
1) To stop the stuff autoloading: that's a FAQ, see http://stereoroid.com/sounds/mpc1000/faq.php#gen06
2) to DELETE the stuff: save something else to the Internal Memory. Whatever you want, within the memory limit, even "nothing" if you want.
I just leave the stuff in there, in case I need to bang out a rhythm, like, Now...

By stereoroid
Mon Dec 06, 2004 9:59 am
http://stereoroid.com/music/mpc1000/ for PGMs, samples, FAQ, and waffle.

