We wouldn't say iriver is pulling out all the stops on its new K1 Smart HD player, but it's certainly putting a bit more love and polish into the device than we've seen from the company in recent months. Now a video of the UI has been unearthed, which shows a new touchscreen UI based on a sort of "circles" concept. There are smacks of a traditional grid and multi-homescreen interface as well, akin to iPhone or Android, with a bit of widget engine and exciting translucent overlays for good measure. A Cover Flow-styled music browser can actually be navigated through use of the accelerometer, and if you're brave enough you can even dive into regular old Windows CE for exc
