There is not a thing wrong with that Jafo. The only reason I don't use skins like that any more is because I very seldom listen to music while doing other things on the computer. I sit in front of the speakers and just chill out focusing on the music. When I do that I like to see a skin I find esthetically pleasing. Its all about personal preference.
For me music has become a hobby now that I have more time to enjoy it so I guess the music comes first and the skin second. That being said if I am going to look at a skin for substantial periods of time I like beefy retro looking skins, again just personal preference.