I don’t use the Media Library, so maybe others can help with it.
I decided not to use the Media Library, because It takes a lot of time for it to read the files and it makes the media player slow while it’s searching for files.
I also prefer not to give WDTV write access to my shares.
If you want covers and movie info, you can use a theme and get all the covers with ThumbGen from a computer, it works very well, but I don’t use it either.
Optional, you could have all the files in only 1 place, a NAS or a USB HDD, it acts as a backup of your computers and it consumes much less power, it sleeps and is always ready to be used.
Maybe you could try this configuration, I have zero problems with it.
No waiting, no WDTV getting slow, all works well.
Setup > System > Media Library > Off
Setup > System > Get Content Info > Manual Only
Setup > Network Settings > Network Share Management > Windows Share Server > Off
Setup > Network Settings > Network Share Management > Enable Access to Linux Share Servers > Off
