Can you please be more specific at what source code are you referring to? My Top 10 Aurelius Features is a series of 10 videos, and most of them just mentioning features and/or showing pieces of code.
Next version will be released maximum next week. You are referring to the fact DBIndex is only created when UpdateDatabase is called two times?
There is a MusicLibrary demo in Aurelius distribution, have you checked that? It's a "full" application (sample, of course) but it's more complex that just code snippets. If you have a specific question about a feature, just let us know.