Sometimes there are ‘undocumented features’ in a product that you discover by accident.  Here’s one that makes creating a synth a little bit easier.

If you hit the ‘start a new synth’ button, you’ll go through to this screen, where you’ll click the ‘Add photos’ button and start adding your photos.

But what you didn’t know is, you can start adding photos before you even get to this screen—because you can add photos just by dragging and dropping them anywhere on the green area of the previous screen:

It works especially well with Windows Live Photo Gallery—just select the photos you want and drag them all together to the green area on that box.  When you go through to the next screen, they’ll already be there!