If my radio loses the WIFI connection is there a simple way to reconnect?
Right now, I just pull the AC cord and reinsert it.
Thanks.

That's not the best method, it places strain on the internal PSU which is fragile enough on these units. Go to the System Configuration menu on the Soundbridge and select the Restart Soundbridge option.

The Soundbridge should reconnect to your router automatically though if the signal is there. If you are having to switch the unit off frequently, it may be indicative of a failing PSU.