Quite a few programs on Catholic radio are download able to your computer and IPOD if you have those avenues.
I love Catholic Answers and just heard last night that Monday evenings a show called Catholic Apollogetics (sic) is airing.
Which is exactly the idea of this vanity to learn more (now that I now the proper terminology) about defending our Catholic Faith.
Funny how it seems every week what I study in class the radio shows seem to coincide perfectly with knowledge that I am trying to gain. Well I guess it is not so much "funny" but working in accordance to God's grace/plan.
Catholic Answers is also on the net. A lot of apologetics there.