The series is called the Gateway Experience. Its a kind of semi guided meditation using the binaural beats that is intended to induce out of body experiences.
I tried it years ago and although I never experienced a OOBE it did seem to induce lucid dreaming. Its a bit new-agey but not in a preachy or religious way.
Anyway, TGE is a fantastic resource if you put the time into it. I've gotten to levels of meditation through it that still make me question reality.
On the one hand, I'm very much facts, data, and reproducibility oriented, and "I know" that everything I experienced was just my brain having fun.
On the other hand, WTF. Maybe I am more than my physical self, and there are alternate dimensions I can teleport myself to.
I don't know if this matches anything you achieve through meditation, but I've had some incredibly complex and vivid dreams that make me question everything about myself and my brain. I tend to agree that it just comes down to an astonishingly powerful organ flexing its power.
Although it's not about a magical device but about practice.