Millennium of Music is the world's longest running program featuring early music. It can be heard across the nation on public radio and XM satellite
radio. Host and producer Robert Aubry Davis regularly presents music from major European music festivals and produces specials for Public Radio
I discovered this show on WFMT, Chicago's Communist classical music station. Last Wednesday, they aired this recently released recording of the Divine Liturgy. I've occasionally caught some interesting stuff on this show.
Where you can hear it.