A few weeks ago Medibuntu released a version of libavcodec-extra-52 for Karmic that can be used to encode to AAC via FFmpeg/libfaac:
https://bugs.launchpad.net/medibuntu/+bug/490227
A few weeks ago Medibuntu released a version of libavcodec-extra-52 for Karmic that can be used to encode to AAC via FFmpeg/libfaac:
https:/ /bugs.launchpad .net/medibuntu/ +bug/490227