I think you have now understood the main value added by this book, which can be assumed to be "do more by yourself." Then, as a bonus, I thought you might be interested in some additional software.

As we mainly focused on servers for managing video files and streams, we'll see their musical equivalents, which are the following:

If you have read the chapters carefully and have successfully installed, configured, and run the software, then this appendix will bring you additional fun. Frankly speaking, you should be able to install these servers to your BeagleBone Black easily. Think of adding these extras servers as adding chocolate chunks to a cookie.