Yes, you can set default media to use the same media for each song, announcement, or new item you add to your presentation.
To set default media, go to Settings > Default media:
Choose the virtual screen for which you want this default media to apply:
Choose the service item type for which you want to set a default:
Open the Background dropdown, then select one of the default options, import an image from your computer or browse media. You can find custom Smart Media templates in Group Uploads. When you select the media you want it will become the default media for that service item type on that virtual screen.
Note: If you don’t have default media set for an item of a particular type, the default media is a plain black slide with white text.