Audiobooks of The Macedonian and Cat Island, the final two books (of three) about Favian Markham, USN, have been released, narrated by Bronson Pinchot, who is very fine indeed.
The problem is that I can’t seem to find The Macedonian anywhere but on Audible’s own site, and there I had to go to some effort to locate it. Ideally a reader will want to read the books in order, and since The Macedonian is the middle book of three, I see this as a problem.
UPDATE: It turns out that Blackstone gives Audible a 90-day exclusive, so it will be generally available after that period expires.