Learn to type faster! I went from 35 wpm to over 100 in just over a year of 4-hrs-a-day practice. I have a USB foot pedal so I can start and stop, rewind and fast-forward mp3 recordings. (It would be better if I could do this with speech command - my foot gets tired) Programs to alter the speed of playback typically suffer from pitch alteration.

If you want to do this for a living, look at http://www.careerstep.com