Mpc 1000 blue pad question

I have a mpc 1000 (blue) that I just bought off craigslist
I'm trying to figure out if the pads are bad or what!!?!?!? It's weird
when I hit the pads they are responsive and function... but say I lay down a drum
patern when I go to layer other sounds over each other and hit a pad
to trigger another sound it's almost like it mutes any other sound that is layerd under what ever I'm trying to lay down..... I don't know if I'm in some weird mode I'm not aware of or if this is a sighn of some fualty pads or maybe an OS issue.

ANY one ever hear of anything like this????

Sounds as if your program is set to mono, set it to poly

Ok thanx ,I'm gonna try that.

It worked! Thank you... I don't know why that would be the defualt.