The first episode of the new BBC Radio 4 seven-part adaptation of Evelyn Waugh's Sword of Honour trilogy will be broadcast on Sept. 29th at 3:00 p.m. UK time. Archived episodes should be available for up to seven days after broadcast for listening on demand.
Unlike BBC television programs, which are only accessible to those with a UK-based IP address, BBC radio programs are generally available to web listeners anywhere in the world. A large number of both free and paid applications exist that permit Windows, Mac, and Linux users to record streaming audio from the web.
Update (Sept. 20): Link to the program's home page fixed.