Speaking of a NAS, can anybody tell me why I cannot use the menu while playing movies from my NAS [Synology] to my Mede8er?
The movie plays well if it has no menu.
What kind of movies do you mean exactly?
Blue-Ray or DVDs with a menu?
A 500X has no Blue-Ray menu support as far as I am aware.
An X2 and X3 have, but only BD-light, which means it cannot play Blue-Ray menus with Java, only menus without.
If you are talking about DVD menus, that is possible with all, but will only work when streaming from a NAS when you use filesharing (samba) streaming or NFS streaming. Upnp streaming does not support menus.