Dear Igor, i have had a different discovery. I used a perfect cutted 2 bar loop which played as audio track in the Arrage Window, in the EXS Same experience. The loop was not perfectly looped as before. But it sounded more than the speed was different. So Wav to AIFF is also a problem not only AIFF to WAV. best regards Andreas *********** Hi andreas, Thx for all those test :o) On the ARRANGE window did u try with a WAV or AIFF first ? From AIFF to WAV there a tiny difference and it's the same fron WAV to Aiff ! I really think it's a mistake from EMAGIC... Igor