Installation

Download the latest Standalone image from here.
Then identify your SD card device. I use this way:

First, list your devices BEFORE you insert the SD card.

root@sysresccd /root % ls -l /dev/disk/by-uuid
total 0
lrwxrwxrwx 1 root root 10 Feb 20 18:53 4E363C88363C7357 -> ../../sda1
lrwxrwxrwx 1 root root 10 Feb 20 18:53 4FF6-D29B -> ../../sdb1

Then insert card into slot and list again.

root@sysresccd /root % ls -l /dev/disk/by-uuid
total 0
lrwxrwxrwx 1 root root 10 Feb 20 18:53 4E363C88363C7357 -> ../../sda1
lrwxrwxrwx 1 root root 10 Feb 20 18:53 4FF6-D29B -> ../../sdb1
lrwxrwxrwx 1 root root 10 Feb 20 18:54 5ff096ad-4d5e-4277-8e0a-b4351e452352 -> ../../sdc2
lrwxrwxrwx 1 root root 10 Feb 20 18:54 917E-484C -> ../../sdc1

Now you can copy the image:

root@sysresccd /root % cd /livemnt/boot/
root@sysresccd /livemnt/boot % ls -la *.img
-rw-r--r-- 1 root root 1363148800 Feb 15 19:30 raspbmc-final.img
-rw-r--r-- 1 root root   76800000 Feb 15 19:28 raspbmc-installer.img
-rw-r--r-- 1 root root 1363148800 Dec 15 17:56 raspbmc-rc5-prebuilt.img

root@sysresccd /livemnt/boot % dd bs=4M if=raspbmc-final.img of=/dev/sdc && sync
325+0 records in
325+0 records out
1363148800 bytes (1.4 GB) copied, 113.504 s, 12.0 MB/s

Done! Insert the cart into your PI and connect it to the power supply.

Setup NFS Share

NFS has less overhead in comparison to SMB, if you are good with NFS, set it up like described here.
To understand basically how to setup a share, see this article.

See my example: On the file server, install:

root@nairobi / # apt-get install nfs-kernel-server
root@nairobi / # mkdir -p /export/movies-en

Add this line to your /etc/exports file:

/export/movies-en 192.168.0.0/16(ro,no_subtree_check,nohide,async)

Edit your /etc/fstab file to mount the source to the share automatically during boot:

... your entries ...
/media/movies/movies /export/movies-en none bind 0 0

Finally, reboot the NFS service to apply the config changes.

root@nairobi /export # /etc/init.d/nfs-kernel-server restart

Setup SMB Share

You can also use SMB for shares.
On the file server, install the packages and setup the shares in smb.conf

root@nairobi / # apt-get install samba smbclient

root@nairobi / # vim /etc/samba/smb.conf
[global]
workgroup = smb
security = share
share modes = yes
encrypt passwords = true

[homes]
comment = Home Directories
browseable = no
read only = yes
create mode = 0750
guest ok = no

[av-content]
path = /export/
public = yes
writable = no
comment = audio video files
printable = no
guest ok = yes

[my-pictures]
path = /media/datadisk/shared/
public = yes
writable = yes
comment = personal pictures
printable = no
guest ok = no

Finally, restart the SMB service to apply the config changes.
Test your settings.

root@nairobi / # service smbd reload
andre@nairobi ~ % smbclient -N '\\nairobi\av-content\' -c ls
Anonymous login successful
Domain=[SMB] OS=[Unix] Server=[Samba 4.1.17-Debian]
  .                                   D        0  Sun Oct 11 22:02:10 2015
  ..                                  D        0  Thu May 14 19:08:22 2015
  _videomisc                          D        0  Fri Jun 20 17:28:42 2014
  _downloads                          D        0  Wed Oct 14 01:11:07 2015
  _series                             D        0  Fri Jun 20 17:45:02 2014
  _audio                              D        0  Fri Feb  6 00:17:21 2015
  _dieterdata                         D        0  Sat Oct 10 07:06:48 2015
  _movies                             D        0  Fri Jun 20 17:00:04 2014
  _music                              D        0  Fri Jun 20 16:57:18 2014

                44928 blocks of size 1048576. 25473 blocks available