I can't play the podcast file on certain type of MP3 player, I think it due the encoding format isn't so standard?
So my recommandation is encoding MP3 by 64, 96, or 128kps rather than 80kbps.
and as a side note, some of the early files are at different bit rates, you can check the podcast feed to get some of the early shows, i have shows ranging from 64 up to 128 K
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