Okay the .wav downloads that came with the uber box have necessitated my foray into understanding decompression etc. What I want to know is, if I convert the .wav files into .m4a with iTunes, thus making the files smaller, if I then convert those same .m4a files back to .wav, will I be back to the same uncompressed (i.e. same quality) files that the original .wavs were? Or does the compression destroy some of the quality that a reversal won't bring back? I ask because they're too large to sync to my phone and it takes up way too much space on there anyway, but I'd also like the option of listening to the .wav version in all its uncompressed glory without having to keep two versions of the same songs on my computer.