Hi Chris, welcome to Dreamviews!

I tend to be more on the skeptical side when it comes to electronic and MP3 induction techniques, and because of this I focus almost entirely on awareness (but that's just me). I stop at least five times a day, at completely random times, and ask myself if I'm dreaming.

"I could be dreaming right now," I say with some conviction, and then do a reality check.

Some products like the NovaDreamer emit lights as you sleep, directly into your eyes, and these lights appear in the dream. But you have to be aware enough in the first place to detect them.