Hit a pad to start / stop a sample looping?

Hey all,
Need some help.. can't figure it out from the manual. Is it possible to hit a pad once to start a sample looping and then hit it again to make it stop. So far I can only get them to loop with the "note on" and holding down the pad. I will need to trigger other samples "one hit" style at the same time.
Do I need to record a sequence and then play along to that? My mate mentioned doing it with envelope settings (release all the way up) but I can't find that either...
Help!!
Cheers
Pete

Oh yeah.. forgot to mention I'm on JJOS 1 4.99
Thanks
Pete

there's a trick, it's in the jjos forums but i don't know it.
i just create a sequence to do that.

akai os 2.11:
turn your sample to a patch phrase.
turn loop on
assign to a pad (e.g. pad 1)
assign another pad to mute the first pad (e.g.pad 2 mutes pad 1)
pad 1 will loop until you hit pad 2

I want JJ to include this patch phrase loop feature in his os. Its one of two tiny things i miss in comparison to all the better stuff we gain.

Thanks for that
I found the JJOS trick with hitting the pad and the numeric key at the same time.. works but a bit tricky for live
I reckon i might try the akai software... i'm only using the mpc for live triggering samples.. so maybe it'll be OK
Cheers
Pete

Mikolo how stable do you reckon the current akai os is, and what else does it have that you wish was in the jj os?

I dont use the akai os, so i dont know about its current stability. I loaded up the 2.11 just to see what the patch phrase loop was like that i described earlier.
Itd be nice for JJ to include it but its a tiny,tiny thing in comparison to all the other JJ refinements.
JJos is 1000 times better where it really counts, workflow and reliable saving.