Sony TVs and Blu-ray players do operate this way - i.e. their firmware has 3 distinct modes (Video, Music and Photos) - and you can only play play video files under "Video" mode, music files under "Music" mode, and photos under "Photos" mode. So in your case, trying to browse and view some photos when under Video or Music mode will not work due to the restriction in Sony's firmware. The recommended fix would be as follows:

  1. Reset you Mezzmo database again to get back the default set of playlists.
  2. This time, keep the top-level "Video", "Music" and "Photos" playlists but delete all the playlists under them (such as "Recently Added", "Movies", "Genre", "Year", etc.).
  3. Click on "Videos" playlist in the tree in Mezzmo and click "Add To Library -> "Add folder" to add your folder "Movies - Rock Concerts". And, then so the same for "Movies - War" folder as well.
  4. Click on "Music" playlist in the tree in Mezzmo and add your folder "Music on iPod" and "Music not on iPod".
  5. Click on "Photos" playlist in the tree in Mezzmo and add your folder "Photos - Current" and "Photos - Family History".
  6. Wait for Mezzmo to add all sub-folders and files and collect metadata.
  7. Now try your Sony TV. You should only see your relevant folders & files now.

The reason we keep the top-level default playlists is that Mezzmo server knows that the Sony device is in (say) Video mode and can deliver all the folders, playlists and files under the "Video" playlist.