help with adding 3mu to mag 256

[filmguy695]

I am trying to add a 3mu file to my mag but have not found a dummys guide and I am a dummy. if there is a guide some where please point me to it. I have gotten as far as putting the 3mu file on a thumb drive but the mag doesnt see it when I go to the media center. it sees other file on the thumb drive .obviously I have no clue what I am doing someone said I need a server and dont know what that means but I am old so could use some direction thx so much for any and all help.

[crazed 9.6]

I had sent you a video to wtach, thru a message to you the other day.
Look in your inbox for messages.
Or google search for -- Mag STB m3u