I really like Hurrians designs, but IMHO the player buttons should be way bigger and further apart. You want to operate this screen with one hand, no stylus.
A bit of N9-ish idea: No buttons but the whole music "widget" as a slider. Slide it left or right to skip track, press to play/pause.
Also I'd vote to keep the unlock slider a slider. Double-click unlock wont work with a resistive screen (or rather would work all the time in your pocket). Since this program needs to be really fast I'd also suggest to keep it low on functions, but the huge clock is a must. Amazing work as usual, MAG!