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Re: Disagree....

Apple lossless is totally lossless, the decoded file matches bit for bit the original CD. With a hex editor you can do this test that proves it.
1. Take any 16-bit .wav file and import it into iTunes (you can rip it from a CD with iTunes)
2. burn it to a CD
3. re-import it from the CD using apple lossless encoding
4. reconvert it to a .wav file
5. use a good hex editor to calculate the CRC (checksum) of the two .wav files, they will match exactly

A CRC is a cyclic redundancy check, it uses nonlinear division to divide the file by a (usually 32 bit) number and returns the remainder, the likelihood of the files CRCs matching if the files are not identical is 1 chance in 2^32, or 1 chance in ~4 billion so you can have reasonable confidence that audio files with identical CRCs are truly identical. Interestingly there are very very few CD ripping/burning programs that do not change the audio, iTunes is one of the few that is totally bit perfect, as long as you use lossless files.

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