I've been listening to his "Time Again" album for awhile now. On which he's joined by folks like Tim O'Brien,Darrell Scott,Riley Baugus & others. He's also included some recordings on this album of He & his grandfather,recorded in 1990 I believe. Sounds like they were made on the front porch. Not studio quality,but I love it.
Just a mention,if you get the Cold Mountain DVD,there's a bonus disc that includes a tribute to the movie (Music & interviews). You can see Dirk Powell & other musicians involved with the soundtrack,playing in concert.