The support page has an error, explained in this post:
Following the above, your music videos will appear on the Artist page.
The only way music videos will appear in the Album page is if the video filename is exactly the same as the corresponding music file (except the extension). In the case of your screenshot, the filename should be
13 - Voulez Vous.avi.
If you’ve done that correctly, you can access the music video like this:
The icon next to the track title tells you there is an associated video. You can play the video by clicking the action menu at the right and selecting ‘Play Music Video.’
