AA battery powered mp3 player?

I don’t really think people in the camera market are prioritizing what type of battery a particular camera runs on though, when they are planning which one to buy.

My Nikon point and shoot runs on 2 AA’s, and I have Rayovac “Hybrid” 2100mAh NiMH rechargeables that I use in it, and I’m quite pleased with that combination. I used a gift card last Christmas to get a charger, and a bunch of  these AAA ( 800 mAh ) and AA “Hybrids”, so all my remote controls, my camera, and even my FiiO E3, which I rarely use now, can be powered by rechargable batteries that I got free. I’ve certainly saved a bunch of money this year with these batteries.