If you know Swedish, then you should listen to this program about Loudness War! If you're not familiar with the term "loudness war", it's the process of getting music to be as loud as possible to draw attention and to stand out from the rest. The downside of this is that the music then gets less dynamics and also lots of added distortion, which in turn prevent you from playing the material really loud (the ears won't like it) and it also triggers listener fatigue quicker.
People are becoming more and more aware about this, and this is one reason that vinyl is getting more and more popular. The audio on CDs can be pushed harder technically than vinyl and therefore they often sound worse than it's counterpart. The problem is not the CD, it's the processing done to the music!
Listen to the program here:
http://sverigesradio.se/sida/avsnitt/613255?programid=4112