yamaha fc-7s work well too.
the sample rate is 44.1kHz/16 bit (from the product page)
be sure to copy the tempo.txt file from an existing loop to set the tempo for it
and then make blank tracks that are the same length as the rest for the rest of the tracks (the ones you don’t want to be drums) in mono and one blank track in stereo for the master. name them track1.wav, track2.wav, track3.wav, track4.wav and trackm.wav [stereo].
should work.
otherwise, play the output of the cakewalk track into the 2880 and loop it by hand.