Ryan Han has developed a concept for a Bello PMP, which, despite the striking unoriginality of the design, it actually has some neat (concept) features. The standard finger clicks, swipes and flicks are all incorporated, but the most interesting features involve utilizing shaking and pouring motions.
Shaking the player will turn all the files into icon format, these can then be moved about and arranged, while tipping the PMP will begin file transfer mode. It's a neat little trick, but I don't know we'll ever see it happen. Nice try, Ryan. Check out the sexy gallery below.