I am joining this tread as I have the same problem reported here. I can not play any video (even youtube) or music files at all.
My USB drives are attached to the LE box directly (via a 8 port USB hub). I have, even though I didn't think it mattered, changed the min SMB version to 1, but no effect on this issue.
The motherboard is an AsRock single board (Intel) computer and video/audio is via HDMI to a Marantz 7702mk2 processor. No h/w changes at all on the LE box. KODI system information reports the following video information: GPU Mesa DRI Intel HD Graphics 405 - (Braswell); OpenGL Vendor: Intel Open Source Technology Center; OpenGL Version: 3.0 Mesa 17.1.3
Interestingly, I can play video from this LE box, when I attach to it from a Mac running Kodi 17.6. So, it would appear that the filesystem is functioning correctly on the server LE box. Must be something with the player? Music won't play either, so I'm thinking not a video issue per se.
Today I tried using the context menu, play using: video player. This works. The video is a bit choppy, but it plays. So this now really does seem to point to the player as the culprit.
I was running. 8.0.2 and all was golden. Then I installed 8.2.0 by copying the update .img to my updates share. At first things looked ok, but then I noticed the remote was getting double keystrokes. I read the release notes and turned off lirc. When I rebooted, I no longer had working video. No idea how (or if) changing that setting could have caused this problem. Anyway, I turned lirc back on and it did not help. Currently it is off again.
Subsequent to the 8.2.0 update, I used LE's administration panel to do another update to 8.2.1, hoping maybe something related to my issue got fixed. No change. Only way I can get video or music to play is by using the context menu.