I have uploaded a few files which may or may not be to your advantage in working with the Korg Micro Arranger. It should be noted though that in no way other than being a home musician and fanatic programmer am I associated with Korg in any professional or whichever capacity.

I notice folks asking for detailed videos but I would not hold my breath here as far as Korg itself is concerned.
I think it is imperative you first get a handle on things by reading all manuals ,including the one that I am posting here called SAMPLING PA800. Yes it is for the PA800 but the SOUND part of it should be illuminating for those using other Korg arrangers including the Micro.
Of course to those totally unfamiliar with the Korg OS it would be best to sit down with someone who actually has a working knowledge of the Korgies.

Here are the links to some things you may want to download and have a look at. I also include my homepage for anyone in search of Korg PA software for whichever model that you have, and my Youtube homepage which includes a number of songs done with the PA50sd, which is identical to the Micro Arranger.

best of luck,
John

http://www.box.com/s/c35d82661938ea84c02d
http://www.box.com/s/fe5dbb835a9bfc69e5b7
http://www.box.com/s/75023cae64acb9242c9e

http://pasounds.intropagina.nl/
http://www.youtube.com/user/matseims/videos