Multi media player multi sources

I need to create this VR player, so when user click a button it can see different VR videos projected on a sphere.
I have everything setup already but the way I did I create a unique media player for each media source.
When I open the media player I see the list of all medias in the scene and I wonder if I can create a single media player and load all media sources on them when called with blueprint.
It this way more efficient, or I have to create as media players as media sources I have?
Your input is appreciate.