My wife and I own a recording label and have had this pet peeve for a very long time. I detest mp3s. They just sound terrible compared to beautiful lossless formats. If people could listen to studio masters before any sort of conversion they would be blown away at the difference that exists. Even untrained people in the studio can tell a large difference from the crisp beautiful highs and sharp lows. To me an mp3 is like smearing a thin layer of mud on a window....yes you may still be able to see out of it...but it is dull.