Hehe. Mic quality really doesn't matter that much for broadcasting. The frequency response of the good ole Shure SM50-57-58 is fine. Most of the time, for the recording purposes, it's normalization/compression to get the volume. Same with commercials.

BTW, Mark, just get a filter for the Ps and Shhh sounds and don't talk directly into the mic. (I'm talking about a real kind of screen filter, not a plugin).

At the same time, I'm reading that you are mailing them the show to play? If so, why couldn't you use software? You've got a multitrack recorder (either hardware or PC) right? Send the music equipment to one audio track and the vocals to another. It'll give you the ability to record the whole thing live and then fix the vocals later if any sound anamolies come up.