ffmpeg and libfaac support

[Andrea]

The latest update from rpmfusion of ffmpeg dropped support for libfaac.

the changelog mentions it

* Thu Oct 22 2009 Dominik Mierzejewski <rpm at greysector.net> - 0.5-3
- dropped workaround for non-standard openjpeg headers location
- Add BR dirac vdpau. (kwizart)
- Don't build faac by default because it's nonfree. (kwizart)
- fixed PowerPC builds (bug 808)

Do we have an alternative? What's the point?

I see that ffmpeg still supports mp3. I thought it was not free either.

Andrea