There is also a Quaker meeting in Las Vegas. Quakers are often folkies, and very hospitable.

Look at the thread FOLK MUSIC ON THE RADIO and see if you can pick up any of the stations listed there. (Looks like KUNV is all jazz – sorry.) Listen for announcements, or look at the station's website for information.

I does look like Las Vegas is a hard place to find folk music. Good luck.