Not sure if this has been mentioned, just read the post where the guy said it was impossible and wanted proof of movie sheets running over the network. Well that's how I do it.
You have to use a small pen drive which stays plugged in with a certain file on which says this
#
# Example net.mounts file to demonstrate auto-mounting
# of network shares
#
# note: that if you store a net.mounts file in /conf/ then it will ALSO
# execute on startup.
#
# Mount a windows file share (must be done by IP address)
#
#xmount "//192.168.0.33/ShareName" "ShareName" cifs
# if your "guest" account is disabled, you must supply username and password
#
#xmount "//192.168.0.34/ShareName" "ShareName" cifs "user=username,pass=password"
# Mount an NFS share
#
#xmount 192.168.0.44:/nfsroot ShareName nfs
# Mount a remote FTP
# to find advanced options execute:
# curlftpfs --help
#
#xmount "ftp://192.168.0.234:21" "FTP Name" ftpfs "-o user=UserName

assword -o Option2"
# Mount a remote SSH server
# sshfs *requires* keyless login
# you can view your public key by executing:
# ssh-public-key
# add your key to a remote machine by executing:
# ssh-copy-id user@server
#
# to find options execute:
# sshfs --help
#
#xmount "User@ServerName

irectory" "Server Name"sshfs "-o follow_symlinks"
# combine previous xmounts using unionfs
# unionfs takes a colon delimited list of 'ShareNames' and aggregates their content to the target
# directory structure is preserved
## the following is an example, it mounts 4 remote shares 'hidden' so they
## are not visible in the OSD and then aggregates them.
## you hide an xmount by preceeding its 'ShareName' with a . (dot)
#xmount "192.168.0.44:/movies" ".movies1" nfs
#xmount "192.168.0.233:/stuff" ".movies2" nfs
#xmount "192.168.0.101:/movies3" ".movies3" nfs
#xmount "192.168.0.151:/videos" ".movies4" nfs
#xmount ".movies1:.movies2:.movies3:.movies4" "ShareUnion" unionfs
xmount //192.168.1.142/mylibrary Media cifs user=*********,pass=*****
Took me ages to get working but now all my movies come from my NAS with lovely Movie sheets