Sounds almost too good to be true... any major downside, other than current lack of support?
Because it is GPL3, it won't be supported by Google on Android, by Apple probably anywhere, or by Microsoft anywhere. In other words, it's a lovely idea, but due to a poor choice of license, it won't get any adoption. C.f. Ogg Vorbis, where the license for the specification is public domain, and the license for the libraries are BSD-like. To quote FSF: Some libraries implement free standards that are competing agains…
"In terms of licenses: GPL is all you get for now. I can always add more liberal licenses later. LGPL for a decoding library, or maybe even MIT? We'll see, I'm not in a hurry."
https://boards.openpandora.org/topic/18485-free-lossless-ima...