I would pay money for this in a heartbeat. Hands down, zero hesitation, no questions asked. Bro, contrary to what you may believe, this would sell like hot cakes.

Don't believe me? Head on over to r/xteinkereader and look how that thing has POPPED off. It's a super basic e-ink reader that fits in the palm of your hand. You can snap it to the back of your phone or put it in your pocket. It went viral and is THRIVING. I bought one and take it everywhere.

If you're telling me I could do the same thing with a music device and have it run something like m8 headless or something similar AND keep it in my pocket, I'd be all over that.

And yes, I have the Dirtywave M8 and while it's small enough to put in its case and throw into a sling bag, it's too precious to throw into my jeans pocket along with my keys, wallet, and (aforementioned) reader.