Wired vs. Wireless network visability to shared music on a NAS

Question

I have upgraded to 10.2.1.1 iTunes, I am running a wired network in my home that also has a WAP connected for my wireless devices.  The issue is, when connected to the wireless I can see my shared music that resides on my NAS in iTunes.  If I connect my laptop to the wired network, the share disappears.
Why is this?

Answer 1

As a client OS X supports the major two VPN protocols, PPTP and L2TP over IPSec. As a server technically OS X supports both of these too but the difference is this sort of thing was more aimed at OS X Server so there is no nice GUI to work with.
Of course I wouldn't have suggested this if there wasn't a nicer solution at hand. I'm sure there are others too but what I know works (as I use it) is [iVPN|http://macserve.org.uk/projects/ivpn>, essentially a GUI wrapper to the already installed daemons. As far as performance goes it's dependent on both your connection at home and the connection wherever you are but then that would also be the case if trying to access the NAS remotely anyway. I'd also guess this will result in a safer connection too as the file sharing protocols you're using probably aren't concerned about encryption.
The only thing I'd say is I do believe there are issues if both the home network and the place you are at are both using the same private IP range, assuming both locations are behind a router. The reason being if both use the same range how can your machine know when you mean one network and not the other. Careful selection of the IP range at home though can minimise this by choosing a non-standard private IP range. So a lot of home routers, the majority I've come into contact with anyway use 192.168.0.xxx or 192.168.1.xxx. The entire 10.xxx.xxx.xxx though, assuming the router allows you to do so is open and if you pick something in the upper half the chances of both places doing the same has to be very slim.