My first post here at creative cow..I have exactly the same problem and no clue how to resolve it.. Any more suggestions? No hidden filters, no large files, just open copy will result in very low pitched file in sound forge 11 and also back in vegas 13. Could it be the sound card? Could it be the last sound forge update? Could it be the canon xf files.. When i open original everything is fine, but rather not do that! Any work arounds? Many thanks in advance..