For the DSTT OS, copy the contents of the 'Eng' folder to the root of the memory card.
There will be 1 file and 1 folder (that contains quite a few other files), copy them both to the root of the card.
By 'media looking file' do you mean that the ttmenu.dat file has a video/audio looking icon?
If so then that is no problem. You must have a program installed that knows .dat files to be video or audio data. Any program that tries to open ttmenu.dat on a PC will not work. The menu file simply has the same file extension as some video files use, despite it being a different format.
There are quite a lot of different types of files than may have a .dat extension, from antivirus definitions to VCDs.
The ttmenu.dat file will have the icon of whichever program is currently assigned to open the .dat file extension.
If you cannot see the file extension of ttmenu.dat file (you see a ttmenu folder, and a file named ttmenu), then go to:
-The 'Tools' dropdown menu at the top of the window shown in your screenshot
-'Folder options'
-'View' tab
-Under 'advanced settings' will be an option 'hide extensions for known file types', UNtick this and click OK.