Ok John I am hoping this is an easy setup for you. Below is what the chat room will look like and it's size it should fit perfectly under your broadcast window.
here is the script to embed on your page, it gets embeded the same as your podcast this will allow folks to talk and watch the podcast on one page and make it more inviting.
<iframe src="http://lightirc.com/start/?host=irc.lightirc.com&autojoin=%23GooberSaysHey&showNickSelection=true&styleURL=css%2Fblue.css&nick=guest%23&showIdentifySelection=true" style="width:600px; height:300px;"></iframe>
once you have embeded the chat applet you will need to login just type your name in the same as you do on the amsom chat. Once inside you will need to register your name so here is the command you use in the chat room to do so.
post the following in the message line
/nickserv register [your password here] [your email address here]
make sure to leave a space between each item and omit the 
once you have done so you will get an email with a comfirmation code, you will need to use this to confirm yourself
Once you are registered it is time to register your room so below is the message you post
/msg ChanServ REGISTER GooberSaysHey [your password] Goober Says Hey Podcast
this will register the room to and set the topic at the top of the page. If you need anything open the chat page and I will be there