dont by the soundkit they are wack
i have the motif rack and the sound kit
u are better off buying the rack
so u have moer control to structure your sound
as for hooking it up
run it threw midi
i use the midiman box in wich i have my rack my mpc and midi keyboard all hook up
i used the midi daisy chain method
but u can use any midi interface and usb it to ya computer
then go in ya program preffences and change your setting in midi an u should be able to record them sounds
but remember midi has no sound it just a way of transfering
so remember to hook up your audio up or u will get no sound