Is it possible to play multiple patterns at once or do a track mute type thing similar to the MPC ?

No.

theres workarounds for muting certain pads while playing a pattern, you could use the sub effect with the knobs set so that when you put the third knob to the left it mutes the samples its applied to

and / or you can do the above ^^ trick, but rather than have yr beat running as a sequence, build it through re-samples, so that each pad has an element of the beat. a lil more similar to the mpc's mute groups.

Thank you both I will try them when I get back from San Fransisco Thank you

no probs. with a bit of experimenting, there's a workaround for nearly everything.