Q: Can you add support for format XY?

A: I will not add any additional codecs in fre:ac v1.0.x releases.

fre:ac v1.1 will introduce a new component system which makes adding new codecs a lot easier. You can try the latest fre:ac development snapshot available in the downloads section. It already supports several aditional codecs, including Apple Lossless, Opus, Speex and Monkey's Audio.