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how to make a file open only one time like a wav I want to send a wav file to someone but I dont want it to be copied and I would like for it to be only be able to open 1 time.

GreenFrog Answered:

There are various DRM (Digital Right Management) solutions that claim to do this. Most have already been broken, and in principle they can't really work.

Besides, the recipient could always record the audio and play it back later.

So basically, forget it. If you've given someone your data, he has it.