Tip: Good Music Video Source
If you're looking for a good source of music videos, try MTV.com. They have thousands of videos that can be embedded with an unobtrusive player (much more subdued than MyPlay) and very good quality in most cases. Quality differs depending on the video, but the old stuff is usually pretty good and the new stuff is usually excellent (e.g., Pink: "So What" and Leona Lewis "Bleeding Love"). The videos can be embedded at larger sizes and the quality seems to scale up. It's a good content source.
Oh, yes, there are short preroll ads but they only seem to happen every few plays.