Jim Naughton posted recently in response to the unwarranted criticism by some conservatives of what the new American primate had said about the relationship between Christianity and other faiths. His post was excitingly titled Orthodox soteriology. Jim’s links lead to several relevant articles about the doctrine of salvation.
The NPR interview in question took place on 18 October and is 21 minutes long. It covered a lot of other ground as well, and can be found here.
Fr Jake also has an article containing links to put this matter into a wider context of mainstream Christian theology. See Seeking the Way to God.
Fr Jones has added his views: Will Only A Few Be Saved?