After some struggling (and plenty of the help from the community, especially @@Luke and @@funwithmedia), I have managed to get VLC launching correctly as an external player. I thought I would share the steps I used to enable it for anyone else who may need some assistance in getting it working.     1. In Emby Theater, click on your user icon in the upper right hand corner of your screen     2. Click on Settings     3. Click on External Players     4. Click the Add button