Of course, the 770 has its downsides, such as the lack of storage facilities more substantial than a MMC slot; though even with these shortcomings, it looks extremely hackable. (You could try playing cat and mouse with Sony on getting user code running on a PSP, or you could get a 770 and run what you want on it with Nokia's blessing.) MusicThing already lists one application for it, as a control surface for music performance.
Meanwhile, Nokia have committed to allowing use of all their patents in the Linux kernel.
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