audio to text conversion

[qu1nn]

hello,

Is there an application that can convert *.mp3 into txt files (or other searchable text format).

Why?
Throughout the day I listen to tons of audio news / ebooks / other podcasts ... and there are times when I know that I heard something over the past week, but it would be impossible to find without either taking notes all day or re-listening to all of the shows.

any ideas?
Even if the application captures 25% accuracy it is likely to help me in my quest.

regards
qu1nn

[pimanac]

check out this

Sphinx-II User Guide

it looks like an SDK, but there may be software listed on their site