Is it possible to get a low bandwidth version of the show to download?
There are some people (even on the dawn of 2006) who are on dial up and many countries only offer metered bandwidth plans to home users for hi-speed/broadband service.
50mb or so every week, is a sizable chunk if your monthly bandwidth quota is only 2gb - 10gb. Something like 24k -22hz Mono or 32k - 22khz Mono, considerably drops the file size. Being a talk based show via Skype, with little special effects or music, the sound quality would still be ok at those bitrates. Not only that, smaller files, less bandwidth, more available to those with sucky download speeds. More listeners! HUZZAH!