So, about a month ago I made a mp3 file which would make a noise and wake me up 5 hours into my sleep, and then turn itself off (well, stop making the sound) after 5 seconds. I wasn't able to DEILD using this because I would become too exited and come out of my REM cycle, so I gave up on DEILD.

However, tonight I just feel like trying again, and I really hope it will work . Wish me luck, and I will report back with my results.