Yesterday I recorded a 25min. walk through of litwareHR v2 (recording available here)
Even though the primary goal of LitwareHR is to elevate architectural best practices in a Software + Services world, this particular webcast does not dive very deep in the architecture of the application, rather it shows what the application does. If you like what it does you will like how it does it even more.
Walkthrough here (what the app does)
Installer, code, etc. here (how it does it)