Airport Express not working when used with Broadband Router **HELP!!!**

Question

Hello.
I have an ethernet network in my house, and I am connected to the network via a Linksys router for Broadband VOIP and internet. I am on a G5 in my home office and want to stream music to my Airport Express for my home stereo in the living room, via the ethernet connection.
The problem is that when using the router in my network, only the Admin Utility sees the base station-- iTunes does not.
If I remove the router from the equation altogether and plug the network ethernet cable directly into the G5, the AX in the other room works just fine and I can get internet on the G5 in the office. The problem is that I need the router to operate my Vonage VOIP phone service and to connect a second computer to the internet as well. The IP address for the router in the home office is "192.168.x.xxx" and when I try moving it to the living room and connecting the AX to it, the Admin Asst doesn't see the AX at all.
When I connect the router to the network in the office, I can use internet on both computers and the VOIP phone service, and the AX Admin Asst. sees the base station from the other room. But again, iTunes does not.
Is there a way to configure the router to see the AX?
Thanks for your help!

Answer 1

Forgive me if this a little off thread, but I have just managed to get this to work and thought it might help people with similar configuration issues (mix manufacturer wireless networks)
I received an Airport Express (FW v. 6.3) for Christmas this year. I already am using a D-Link DI-524 wireless(G) router (Rev A FW 1.03) for my Comcast cable modem in my house (downstairs). What I wanted to do is to add the Airport Express in my office upstairs to my network (client mode) so that I could print from my HP Deskjet 3740 printer and listen to iTunes on my stereo through Airtunes. I have two iBooks (G3) with regular (802.11b) airport cards in them) running Tiger.
I ran into a couple of snags though. I could see the printer in Rendezvou and I could see the airport express in iTunes. I however could not print to the printer or connect to the speakers. I was able to connect to the speakers very intermittenly and then the audio would be disrupted every few seconds.
After a bit of hacking, what I found is that it seems that WPA PSK security doesn't work between the two. I changed the security to 128 bit WEP (ASCII mode). This means that you need an exactly 13 character pass phrase. This is necessary because Apple (and pretty much only Apple) supports 40 bit WEP (5 chars) and D-Link (and the rest of the Windows wireless universe) supports 64 bit WEP (7 chars), but they both support 128 bit WEP. I assume you could set both up as an open network if you were far enough from your neighbors, but I am in a townhouse complex, so I thought I probably better have some security on the network.
Now I only see one network (the one set up on my D-Link router) and I can print to my printer and stream to my stereo through iTunes (without disruption). Seems to work seemlessly now.
I should also mention that I did about three other things. I moved the LAN subnet on the D-link router to 192.168.1.1 (DHCP client address are now between 1.100 and .1.200) I had heard that this was necessary since both routers tried to use the 192.168.0 subnet, but I think this is only necessary in relay mode. I also statically assigned the IP address for the Airport Express. Finally I set up a firewall rule of Source WAN/LAN IP addresses of 192.168.1.100-200 of any protocol from ports 1-20000 to the same destination address range should be allowed to allow for all LAN traffic to be passed. I am very certain this is unnecessary and possible dangerous for security, but I thought I should mention that I did it.
Hope this might help someone.
Michael
iBook G3 (600 MHz)   Mac OS X (10.4.3)   D-Link DI-524 Router. Motorola Surfboard Cable Modem. Comcast Broadband