None of the process is complicated other than getting the mp3s onto the empeg. There are only three programs that exist that allow you to do that. The first is emplode, and there's not any way to extend that to automatically download podcasts or even to automatically upload specific mp3s without some sort of macro tool. The second is the open-source command-line tool, which could be extended, but currently only works on x86 Linux, and no one's put in any effort to port it to any other platform in the many years since it's been available. The third is jEmplode, which is the most feasible option. As I understand it, it actually has some sort of plugin architecture that would make it reasonably easy to add this feature. Personally, I don't know Java that well, and I don't have much desire for podcast features. But it shouldn't be unreasonable to make it happen if you can find someone who has an interest in both of those things.
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Bitt Faulk