rip-utils is a comprehensive command line toolkit for ripping, encoding, tagging, organizing, compiling, and otherwise managing audio archives. Each utility participates in a common framework that allows commodity tools (such as file browsers, multimedia players, and streaming servers) to access your digital catalog simply and effectively. A single command `ru rip` (tuned for optimal quality using cdparanoia and LAME) drives the ripping, encoding, and tagging process from end to end. rip-utils also provides powerful support for retrieving, modifying, comparing, and submitting album information using freedb servers.
Although I have not used the device personally, I have heard rave reviews about TiVo. TiVo runs on a modified GNU/Linux system. Per the GPL's stipulations, those modifications have been released, complete with tools for becoming familiar with the code changes (http://www.tivo.com/linux/). Now TiVo is probably more complicated than just the Linux kernel and the GNU tools Philips modified; in fact, I presume (though don't know specifically) that the really cool things the TiVo does are not free. However, I think it is more important that Philips chose an Open Source foundation for a truly ground-breaking product. I suspect this decision had more to do with openess than hype, and while I'd love to see GnuTV.org (or something like that), I'm a practical person and this is a step in the right direction. To me, the TiVo is a shining example of how openess can be used fruitfully. I only hope that in the future, the openess is as great as the fruitfulness.