This is one thing I love about free software: the ability to extend a set of code to other devices and purposes. Somebody has an itch to scratch, shares those changes, and other people benefit as well. :) I just wish that hardware manufacturers in general would release the specifications for their devices, so that hackers could write more free firmware blobs and drivers without having to split hairs. Ideally, the manufacturers would release the code themselves, so that there would be wider support for hardware, and you wouldn't see things like "sound isn't working yet" in the known issues list.
P.S. While this project describes themselves as "open source", it is also a free software project since they use a free license. Otherwise, what would be the point, if hackers couldn't share their contributions with each other and the world?