Samba client issues

I got a vero4k some time ago and now finally tried to set it up.
My network setting may be unusual. I have a DMZ and a LAN. Connections from LAN to DMZ (and outside) require using a proxy, which is provided through squid running on a RasPi.

The vero is in LAN, together with a workstation providing a few samba shares containing video files. I want to connect to those shares from the vero.
The Vero gets a static IP from the router. Ping and ssh work fine.
In order to update the Vero, I had to add /etc/apt/apt.conf (which does not exist by default) and enter the line:
Acquire::http::Proxy “http://user:pass@ip of the proxy:port”;
After that the vero could update successfully.
Setting up the network shares is … not really intuitive. Is there any documentation describing how to setup the whole thing via shell/editor? I’m absolutely NOT going to use the remote ONE MORE TIME just to receive another unhelpful “Error: File exists”. I’m sure it is possible to edit this via ssh/vi. Could someone please enlighten me?

Alternatively, using a web browser is also fine. The vero has a webserver up and running, but I could not find any item where I could enter information on network shares.

See File sharing with a NAS, media server, windows share or other device

I used autofs, works fine for me.
After you have mounted the shares you still need to add them to the library the usual way:
Add Source -> Root File System -> /mnt/xxxxx