> since the hashes, etc. of those files will now be changing. I'm having a hard time seeing hashes[1] being very valuable for much of anything regarding music

> since the hashes, etc. of those files will now be changing. I'm having a hard time seeing hashes[1] being very valuable for much of anything regarding music library management. Hashes won't be any good for comparisons of music files containing the same song across different recording sessions, bit rates, or file formats. I would rather all of my music playing programs respect standard metadata formats (like ID3) - which is usually included in most digital downloads and which is supported across all the popular audio file formats - and leverage that metadata for organization. Off-hand, I can't think of a music organization system that relies on hashes that is not brittle. 1: I'm talking about "dumb" hashes like SHA-1. Fingerprinting can work well for this, but is more complicated: http://en.wikipedia.org/wiki/Acoustic_fingerprint http://en.wikipedia.org/wiki/Acoustic_fingerprint