It has been a long time since I experimented with loops. I used to use the program Acid pro back a while and once wrote a tutorial in Cakewalk music creator for loops. As I recall to make loops I always imported a wav file into a track, then set the loop markers so that the lopped area played perfectly in time with the music. Then export that looped section acidized to the loops folder and save it there. and then you can use that loop in any track.

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