This might save a lot of frustration:
http://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=233035

Originally Posted By: solidrock
Easy quick way of dropping loops to RB until we get a drag n drop loop selection window. You can do half/Double time etc.

Rubber Band Audio Processor

It uses the same engine as BeatCleaver

RubberBand with Realband.MP4
RubberBand with Realband.WMV