Few questions bout PAD's and Seq. Editor

Hi!

I'm new in the MPC world and I have a few questions...

1. If I have Track 1 that has 8 bars... and a drumline that has 4 bars.... how can "repeat" the drum patter so it plays on the whole 8 bar melody, not only on the first 4 bars?

2. I'm making a song in the SONG Editor... do I have to make a different sequence for each melody change up etc? Lets say i have 1 melody and 2 drum patterns... I want the melody to be looped and the drum track to play the two different patterns... do I have to make a different sequence for melody +drum pat 1 and a dif. seq. for mel 1 + drum pat. 2? Or can I mix that up someway?

3. How can I export a song in a format that will be read by the computer via HD? I dont have a mixer and I can't connect the MPC to my laptop (I can use only HD connection via USB)

4. When I press PADs 13 14 15 and 16 I have a strange noise...When I "push" the rubber pads a little bit down (not push them but "move" the pad rubber a little bit in the lower pad row direction it stops...What can I do about it?

I know that question 2 and 4 a lil bit difficult to understand, but that's the best way that I can explain it...


PLEASE help


thanks in advance

PEACE