In case anyone else is interested, here's how I set up the Nokia to be used as a remote for the Olive, unconnected to my computer network, but with only one unit. It's really nice to sit in the sweet spot and scroll through your music collection on this little device. Thanks to Olive support for their help setting it up.
If you don't have a wireless network, you just set the Olive as the Server. This way, the Musica sends out a wireless signal to the Nokia, and the Nokia connects to the Olive Network.
To do this, go into 'settings and special' on the Olive. Then into Network. Set the mode to Olive Music Network (not Home or Expert Mode), and make sure the WLAN is turned on. Save the changes by turning the outside wheel to the left. Now, with Configuration Highlighted, press the Information button. This will display the IP address of the Music (write it down for use with the Nokia).
With the Nokia, search for available wireless networks, and the Olive Music network should show up in the list---> Select this
Now your Nokia will be on the right network, so open a browser window and enter the IP address of the Musica into the address bar. This will bring you to the Olive Web Interface.
Make sure to enter a Network name. Mine was blank and wouldn't work until named (I called mine Olive).