Fair reasoning from the archival master standpoint. I share a lot of what I rip with other DJ friends. If I sent them a FLAC or ALAC file, they would respond "what the hell is this? how do i listen to this?". mp3 is ubiquitous and 320 kbps does the trick for me. I hope I don't feel that sting of regret you mention, but my gut feeling is that I will not. I still have the records themselves on the shelf which should last longer than the harddrives :)