Currently we here at Wilmington have two podcasts on the Internet. Podcasts are like Radio programs except there is no charge for air time. They are easy to set up and put on the Web. If you need further information post questions and comments in this thread.
Ok let me tell you how I do my podcast. I have what is called by apple a .mac account.
I record the audio in a program called Garage Band. I can put pictures, video and URLs in the podcast. I can put in as many tracks as I like. I have 4 mic tracks and a couple of music tracks. I have an Intro and then start with a question in the first mic track. That goes for about 3 minutes and then I have an ad (lack of a better term) what we called in Broadcasting a spot announcement of about a minute about either the Website or a Correspondence course. Then I continue dealing with the question for about another 5 to 6 minutes and then the Website or Correspondence ad. Then come back and conclude with the question. Again Garage Band makes this easy.
Once finished I share it to the iweb program. Once there it is put to the proper Podcast page either "The Bible Says Podcast" if a question or The Wilmington church of Christ Sermon Podcast if a sermon. Then it is published from there to my website.
I know there are similar programs for the PC to do the same thing but being a Mac user and unfamiliar with those programs even though I do IT work part time in which I deal with PCs.
Hope this gives you some ideas. If you have any more questions write.