Double check and verify that the files are being properly identified by LMCE. DO this by going to the webadmin @ http://192.168.80
.1 or http://dcerouter
After logging in with your credentials, your name, and again your name as password if you have not changed it, across the top of the web page you will see the heading
Files & Media > then choose > Media Files Sync
A panel on the left of the page should show you several choices, look through them for the name of the share drive, could be top level, or it could be under another link like videos or other.
Once you find the drive, click on it in the left pane, this will show you the files contained on it in the right pane.
You should see your videos by file name i.e (blah.avi, blah.mpg, blah.xvid) etc.
Next to the file names will be a drop down box (to the right of them) click it and select (LinuxMCE Video File)
Do this for the first page of them, and then click "Add to database" (to the right of the drop down you just used)
After that is complete, then at the top of the page click "Resynchronize"
Let that finish, and do a reload router, and you should be good. \
Incidently, going forward, now that you have added those file types to the database, all new videos will be automatically folded into the mix, you should not have to do it again.