As I've mentioned in the past, I'm not a 'tist and I don't really have the time to develop the skillset to implement ideas for new files. Still, I figure someone might get some mileage out of 'em, so it doesn't seem right to keep ideas to myself.
This one's very simple: the file would simply make it so that the listener will always cum faster than the last time they had an orgasm. Maybe just a little faster, sure, but faster nonetheless. Could be fun for a female listener that wants to "warm up" faster, but could also be delightfully evil for male listeners. Don't want to become a premature ejaculator? Then make every orgasm count and use the full amount of time available. Could be an even more interesting file if it suggested cumming as quickly as possible after the file ends.