I guess just assume that the video's are NOT WFS. Then your in the clear.
Personally, I like the music but sometimes the mixing could use some work. The transition between songs is sometimes abrupt. Also, an end credit shot would be nice with artist info. I wonder if its a problem with copyright laws to put the end credits.
I frequently watch the video's with the kids around and if the song has some inappropriate lang in it I just turn the volume down.
Nick Freeeakin Cruz