A podcast is an audio recording designed to be listened to via an iPod (Apple music device) or any computer or mp3 player. Usually they are available in a variety of compressed sound formats (mp3, wav, oggvorbis, etc.) Most modern computers will have some way to play them.
Many people have mp3 players (iPods or similar) which can accept these files as a download and you can listen to them "on the go"… this is a handy way to catch up on things when you’re on the road, at the gym, or whatever.
Another alternative (instead of just sitting at your computer and playing them) is to convert them to a CD and play them in your car or home stereo.
Podcasts have become quite popular in the technology areana, but until now, I haven’t ran across any in the boating arena… but guess what…