feedback wit mpc 2500

hi
can someone help me once again.
just bought an mpc2500 and am quite happy except
i have 1 mixer and to sample i have to come out of the output into the mpc
and then back into the mixer for sound.
i get awful feedback and i can only do one or the other sample or hear wat im doing
i have a tascam x9 mixer
if anyone has a solution for a newbe it would be well appreciated
i cant afford another mixer
thanks

Of course you get feedback, if you route what's going through the MPC back into the same mixer that you sample from. Try setting Monitor to Off in the sample screen when sampling. Otherwise you'll have to make sure that what comes from the MPC does not go out through the mixers sample out.

With the X9, you could also use the effect sends for sampling.