I have added a way to add custom databases to FS-UAE Launcher, so you can (in 2.7.9dev+) store it as:
Code:
Data/Databases/Custom/Demos.sqlite
- allowing it to co-exist with the game database(s). FS-UAE Launcher will not attempt to sync the custom database(s) with oagd.net.
I might also add a way to classify entries as Demos, and add "Demos" to the drop-down along with "Configs" and "Games"