So I wrote that fairly long post about how conferences could create value -- remember that? Ok, so I found a single-source provider that can handle hosting and dealing with all of your audio and video content: AudioAcrobat. AudioAcrobat handles the hosting (and bandwidth needs for doing so) of all of your audio and video files -- not only can you provide download links, but they also are a streaming host.
Pretty cool stuff.
Pricing is around $20 per month with 5gb of bandwidth each month. Again, you're selling a sponsorable vector and potentially have the ability to get sponsor revenue on top of an ancillary revenue stream, so $240 a year is relatively negligible in the face of the potential revenue. Also note the fact that you can record teleconferences . . . imagine doing some teleconferences in between actual conferences with subject matter experts; you could use them as teasers for the conference, as an added value to conference attendees, and/or as an additional revenue stream.