It's also used for archival, so that a few years down the road when a new lossy format du jour (cough m4a) comes along, you're not left with the dilemma of conv

It's also used for archival, so that a few years down the road when a new lossy format du jour (cough m4a) comes along, you're not left with the dilemma of converting one lossy format to another. Not to mention the fact that better quality encoders tend to come along over time.