"I don't know if the folks at Xiph.org can live day-in and
day-out using only the free Vorbis, FLAC, Speex, and Theora codecs,
but the rest of us routinely run into consumer devices that don't
recognize and support them. But with a little help from Filesystem
in Userspace (FUSE) and MP3FS, you cross one incompatibility off
that list. MP3FS lets you mount a directory hierarchy of FLAC audio
files and transparently present them as MP3s to software and
hardware devices alike.
"Yeah, you could just rip your CDs to MP3, then load them onto
your iPod, phone, car PC, or Squeezebox. But MP3 is lossy; you have
to sacrifice either disk space or audio quality..."