Dear specialists! How can I lead to more than one video link (URL) for one added song? I see only one column "URL video". Thank you!
The only way you can add multiple videos to a song is by adding the tag [video:] with the URL after the colon in the comment box right below the lyrics. This how I've done it here.
Unfortunately there's no option to add more than one video in the main video box. Might change in the future, though.