I don't know if someone had already proposed this thing, but if the music videos are not on IMDb why we don't add in the IMDb number field the code of the youtube video? I mean the code after "v=" in the address... This for example "6WKRfgT3Tv4". I don't know if the system is modifiable for recognize the difference between a imdb code and a YT one...

Then we add this picture instead of the imdb logo:



(resized obviously ;))