One's a podcast and one's a real-time forum; both of which you should check out on a regular basis if you're a player of or are interested in mountain dulcimers.
First is Stephen Seifert's "Mountain Dulcimer Folk" podcast which is going into its third year. I'll be talking with Stephen live on Monday, February 2, 2009. The show starts at 8 PM CST / 9 PM EST.
Second is Jeff Hames' New and Young Dulcimer Players Forum, which is going into its second year - a discussion group that meets monthly in real-time with a panel of instructors where folks can post questions and get responses immediately. The topic for the next session is "Intro To Music Theory" and I'm one of the forum hosts - you know how much I love the music theory. That's on February 10th at 8 pm central time.
Both of these, you should frequent on a regular basis to get and stay plugged-in to the mountain dulcimer world.