Before this latest version of EW6, I was able to right click on an image/video in the resource area and set it as default for all songs, scripture, etc. It's even in the instruction manual to do it that way. But now that option is not available. I have to drag the image/video to each song in the schedule which is time-consuming. Is there another way to do this or is this option not available any longer?

Copy video to theme (song or scripture or presentation) and set theme as Song/Scripture/Presentation Theme. Subsequently change theme background or you'll end up with a lot of themes named after file that you select. I renamed mine Default so I quickly know this was theme to change.