A lot of CZers and others are listening to online 'radio' interviews such as oneradionetwork.com (Patrick Timpone). people can actually call in during the show and these people are already set up with the technology so you don't have to spend any time.
Other people like Michael King of Vitality Herbs and Clay do their own conference calling by phone and then make the recordings links available and notes on website. http://www.vitalityherbsandclay.com/teleconference-calls-and-events-list/
THey also can then resend info in their newsletter, etc. Obviously that's a lot more work for you.