RadioSHARK is a device that allows your Mac or PC to play radio, but
also has a pause feature so that you don't miss any of the action. Info at:
Some info from the site:
"The RadioSHARK can record any AM or FM radio broadcast in real time.
You can also program it to record a scheduled show, or to ‘pause’ live
radio so you can return right where you left off moments or even hours
before (time-shift recording).
What is Time-Shift Recording?
Simply put, time-shift recording allows you to pause a live broadcast
and return to it moments — or even hours — later and continue exactly
where you left off. (it's a lot like a popular TV accessory whose name
we can’t say…but rhymes with Steve-O.)
radioSHARK also allows you to start and stop recording at any time while
you are listening, and lets you schedule recording so you won't miss
your favorite radio show."