The problem is the embed requires two values - the album ID and the track ID - we made it simple so all someone has to do is paste in the album ID... I might be able to change it so the entire URL goes in, but then it requires the user to edit the embed to strip out the IFRAME code, etc.
It would be perfect if we could just use the Bandcamp friendly URL in the address bar for an album or track...
And I forgot to mention the button only accepts one value from the input, so we can't put both the album and track IDs in at the same time.