Stobrod is played by Brendan Gleeson. Tim Eriksen is his singing voice. Tim also helped the producers connect to real Sacred Harp singers for those parts instead of using a few singers in a studio. The L.A. Times also had an article about Tim.

There was an earlier thread Here.
Last Friday NPR had a program on Sacred Harp singing that is probably a direct result of the music being used in Cold Mountain.

I've put the CD on my Christmas list & think I've forgotten enough of the novel to enjoy the movie on its own terms.

On that track list, "Am I Born to Die" and "Idumea" are actually the same song.