The
first thing you need is podcast subscription software. Your options
include the latest version of Apple's iTunes
(which has the software built in), or other services such as iPodder,
to manage your podcast subscriptions. At this point, you will already
be able to listen to podcast audio from your computer (provided your
computer has a sound card and can play MP3 audio files). If you want
to also make your podcasts portable, you will need to transfer them
from your computer to a portable media device.