Thank you very much Jim. By using the 'acidize WAV' command I end up with a .bt1 and a .bt6, neither of which would appear to carry much information, but I'm guessing one of them is holding the acidized data. I will look again tomorrow at what is actually generated when use the command and what is generated when I populate the data myself. It seems to me that it is not working as intended because my set of Sony ACID loops works exactly as expected - that is, when I open the file to put the loop on a track, it is populated as expected and these files do not have any auxiliary files, only the WAV.

Thanks

John