Wondering out-loud - Calibre and multi-media files

Calibre touts itself as an "ebook management" system and in doing so makes itself very attractive to people such as me who utilize many different e-book formats. My operating system is WINDOWS 8.1, but I am using Calibre Portable, so I am uncertain that the application is purely anything. Calibre's flexibility, however, has encouraged me to attempt to integrate multi-media files into my Calibre holdings. Successfully, I have added APE, AVI, FLV, OGG and WMV files; added SEARCH Tags and even created and used Virtual Libraries with these multi-media files. So, I wonder out-loud - am I the only person who sees a value in this, and why is this capability not made public?

Mark Lee