Thanks for the tip ... but I am listing to my ebooks on my ipod with vbookz epub or vbookz pdf.
http://www.vbookz.com/V1/vBookz_Voice_Readers.html
So far, it's the best solution I have found for on the go. It almost sounds like audiobooks, in particular when you use the British voices.
Calibre has regex options and heuristic processing.
If some one can give me the regex command to kill superscripts, that would be nice. If this option could be added to the heuristic processing, that would be even better
Thanks.