After install VLC Player i was able to play avi files over the network from NAT, from removable drive and from shared folder on Windows PC.
How it works? You need to log on as root on the blue screen and choose the gnome environment on your YDL.
I also find out that once you install VLC on gnome environment it will also run on the YDL enlightment environment, but gnome is more stable.
Step 1. Getting VLC Player installed onto the PS3, including all dependencies.
Download the 7zip file and use archive manager (default) to extract the 9 file in /etc/yum.repos.d you'll need to set the directory because it will try to download to the desktop.
Overwrite if necessary.
now open a gnome teminal and type
"yum update"
this will update your repositories.
Once its completed we will install VLC player simply by typing
"yum install videolan-client"
Voilà your favourite video player!
PS: Now with firmware 2.10 our beast could read divx, but if you want play video from your LAN, Linux and VLC are required...