Apple's Lossless Audio Codec (ALAC) Now Open Source
Revotron writes "Apple has released the full source to their Apple Lossless Audio Codec under the Apache license. ALAC was developed by Apple and deployed on all of its platforms and devices over the last 10 years. Could the release of the ALAC source code mark a possible first step in opening up more of the iOS platform?"
If you use and iPod, FLAC isn't going to play.
It seems like FLAC has a slight compression edge
Not according to this table.
http://wiki.hydrogenaudio.org/index.php?title=Lossless_comparison
Note for the compression ratio, smaller percentage is better. ALAC is slightly better than FLAC. But it's so marginal it makes no difference.