With multiple assets in the sync area the question arises, which piece of audio do you hear when you go back to Film View?

This is where the concept of the Working Copy comes in. Think of it as the favored piece, or the default asset. When you look at assets in the Sync Area, there is a button in the header (towards the right hand side). It’s normally automatically activated on the first asset that has been added. If you want a different asset to play back as the default, click that button. Now it is set as the Working Copy and will sound when you go back to Film View.