Thanks for flagging this. You’re right, FoleyDock is currently creating large cache files under AppData for some audio files, which can take up a lot more space than expected.
We’re planning to improve this in a couple ways. Local WAV files should not need to be duplicated like this, and we also want to add cache controls in Settings so the cache location can be changed and cleared more easily. That should help avoid large temp files filling up the C: drive.
I will be shipping this update in the upcoming Linux push. Thanks again for your feedback, it only makes our product better 💪