I doubt very much it's a violation of copyright, any more than it
would be to record the radio program from the original broadcast or
for that matter to record a tv show with a vcr.
In any case, the folks at Rogue Amoeba sell two pieces of software
designed specifically to capture audio output from other applications,
including RealPlayer: Audio Hijack and Audio Hijack Pro. Don't let
the names full you -- both are commercial. Pro has more functionality
in it though. For instance I believe it can encode to mp3 on the fly,
whereas the standard package only records aiff (big files: 10+ MB per
I own Audio Hijack, which worked very well in 10.2 but has been a
little flakey in 10.3, crashing twice on me since I upgraded. Maybe
whatever was causing that problem has been fixed in the new release
that came out yesterday, I don't know. I've found that the 'support'
at Rogue Amoeba matches their motto: good software with a bad
It's worth mentioning that the OP could also use Audio Hijack (Pro) to
record the shows directly to disk himself, using its timer recording
feature. All he has to do is connect a tuner to his Mac. That way he
could skip the archived stream altogether. Recording from an external
tuner is exactly why I bought Audio Hijack.