I would expect to see something like None as an option where it says Network Authentification. That's just under the SSID assignment.
Do you have a PC that runs windows? Can you open an elevated Command Prompt?
Win 7: Start, All Programs, Accessories then right click on Command Prompt and Run as Administrator
Type (with an Enter after each line)
With the above we are just trying to wake up everyone on your local net. You will not get any replies but just wait until it finishes.
This will give you a list of all connections and their IP addresses;
Looks like this on mine:
Interface: 192.168.0.5 --- 0xb <== This is the address of my PC
Internet Address Physical Address Type
192.168.0.1 5c-8f-e0-fc-00-67 dynamic <==This is my router. Yours will be 192.168.1.1
192.168.0.4 a0-63-91-8a-5e-e5 dynamic <== The rest of the dynamic entries are devices on the network
192.168.0.6 f0-d1-a9-5a-c5-86 dynamic
192.168.0.9 60-eb-69-f4-88-ad dynamic
192.168.0.11 74-c2-46-31-49-f8 dynamic
192.168.0.255 ff-ff-ff-ff-ff-ff static <== Ignore any static entries.
126.96.36.199 01-00-5e-00-00-16 static
188.8.131.52 01-00-5e-00-00-fb static
184.108.40.206 01-00-5e-00-00-fc static
220.127.116.11 01-00-5e-7f-ff-fa static
255.255.255.255 ff-ff-ff-ff-ff-ff static
Once you have done the above note the iIP addresses of all dynamic entries you have besides the router.
Turn off the wireless speaker or unplug it from power or carry it out side to get ti off the network.
arp -d *
This erases all of the entries.
Repeat the ping.
Which one is no longer there? That is the wireless speaker. Note its IP address and its physical address. (Physical address is called MAC address on your router.)
Try to ping its IP address. Does that work?
There's usually a way to see which MAC addresses you have connected if you look at the router. Probably under System Log on Page 109. Normally logging is off so you will need to turn it on. You probably need to set the logging level to see stuff other than errors but it should show you when a device connects.
If you can get Fairpoint to help that would be a good thing.