hit a pad...play continue loop of a sample...PLz help

As I wanna play 1K for live performance,, I need a help for that,,for an example,I assigned a loop in a pad.when I hit the pad the sample will play continue unless it stop or I hit another pad with mute group... or else,,, start stop playing sample hitting same pad... plz help me..

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for this kind of use the MPC is not well suited. Try an akai s20 instead.

Have you tried this:
Mode + pad 7 (program), highlight sample, press window, then you will see a screen where you can choose between one shot and note on. Change to note on.
Check the manual for better explanation.

Can´t be done in a proper manner on tne MPC 1000.
What you can do (but it´s not very practical, controlable or smooth) is this:

Take a looped sample and assign it to a pad.
Set the layer it´s on to "note on" mode.
Press and hold the pad.
Press "Track mute" while you hold the pad.
You can now let go of the pad and the loop keeps playing.

If you wish you can leave the "Track mute" window and do the same thing with another sample.
Your samples keep playing until you press the pad assigned to the sample.

I don´t recommend this for serious live sequencing though.