Help with Mini Dual Display

I have a late 2009 mini hooked up to my living room tv that i mainly use for Plex. I would like to set up a second display in the kitchen for web browsing. What has me confused is audio. My first thought was to use bluetooth headphones, but it will probably also be used for Plex and Plex and bluetooth doesn't work and range would be an issue. I would like to be able to swith the audio back and forth easily to make the transition between the two displays easy for the wife and kids. Any ideas? Thanks.