[Lunatixz]

You'll find a lot of information contained in the readme file.

Currently PseudoTV Live supports two methods for multi-room. Shared network folder "Centralized file location" or remote path (Auto Discovery) which accesses a hosted m3u/xmltv via your server instance of PseudoTV Live.

Before you can consider using Multi-Room your Kodi instances have to already be configured to use a centralized MySQL database and shared sources.xml with all paths network accessible. Information and links are found in the readme file.

Needless to say, your media server has to be accessible at all times! This is a good place to install Kodi and run an instance of PseudoTV Live as a server. You CAN NOT run headless, there are NO official headless Kodi builds, and even if there were. You would have no way of configuring PseudoTV Lives settings/channels via a headless option.

The server instance of PseudoTV Live will generate all files necessary for its clients and is best left running along with the media server to guarantee files are kept up to date. Keep in mind only the server instance of PseudoTV Live can configure channels, clients are dummy endpoints that handle playback and assist in configuring Kodi.

... I started looking into setting up centralized MySQL database, but it seems to be working perfectly without it. Maybe because I am using all local metadata (NFOs) and all the media is on a separate machine from the PseudoTV Live server and clients?

I assume it works because your network shares are accessable by all the Kodi clients. However without a centralized db some more advanced channels may not build as planned. Ex. Channels that use play counts.