First, check your keyboard as it appears your Caps Lock key is STUCK.
To use TVTunes, a number of things need to be done:
Install the add-on
You need to use a skin that supports the add-on (default Confluence does)
Enable the add-on in your skin settings: System/Settings > Appearance > Skin > - Settings > General Settings > Play TV theme songs in video library (TvTunes Add-on)
Configure the add-on settings, as desired
Launch the add-on and it will go through the shows in your library and attempt to locate themes for them. You will be prompted throughout to select a show and a corresponding theme, if any are found.
Once the scan is done, return to your home page and select TV Shows
Select a particular show and the theme will play if it has one. Note that if you have the parent link ( .. ) enabled at the top of your list of episodes, the theme won't begin playing until you've highlighted an episode in the list.