This section goes through the installation and configuring of MythTV plugins. I will cover only plugins that I find useful rather than covering all possible official and unofficial plugins.
1. MythWeb
2. MythVideo
3. MythMusic
1. MythWeb
This plugin is installed to backend system. Log in to the system running MythTV backend. Then, start installation:
$ sudo apt-get install mythweb
Most likely you want to password protect your MythWeb. That's why during installation answer 'Yes' to 'Would you like to password-protect your MythWeb?' question and enter username and password for it.
To check if the installation succeeded, open up web browser and go to address 'http://mythbackend/mythweb'. If you chose to password protect, it should ask for credentials to enter the site. Enter the username and password you defined during MythWeb installation.