Ah OK, so the *.audition folder is named like that in the docs as the exact name depends on how you loaded the app onto the device.
- If you install over USB, compiled to device, or loaded onto device from the Simulator it’s most likely called com.gingerbeardman.audition
- If you installed via sideloading website it’s called something else ending in .audition
Basically, when accessing via USB the folder should already exist at PLAYDATE/Data/ and end with .audition - you want to put your files in there.