Media detection doesn't work with framesets

Media detection doesn't appear to work for sites that use a frameset such as http://www.lordsoftherhymes.com. You have to view the page within a frame (right-click, This Frame > Show only this frame) for media to be listed. This is easy enough to get around, but it would be nice if media from all frames was listed when a page using a frameset was displayed.

Page with the frameset:


Only the page within that frameset: