I listen to several MP3-based podcasts on my 3rd Generation iPod Nano and many of them are in a pure talk radio format (mostly talking, generally no/little music). I've been trying to find a way to speed up the playback of the podcasts. I know for audiobooks you can choose to have them played back faster, but I don't want to have to deal with converting every downloaded podcast over to an audiobook before syncing it to the iPod. I've also seen this question about speeding it up in iTunes, but I'm looking for speeding it up no matter where I'm listening to it.
I have tried to use http://podshifter.com/ before, but there seems to be a stability/reliability issue with the site from my experience. The issues with it have ranged from not accepting the RSS feed itself, to being unavailable when iTunes is checking the feeds. So preferably I'd like a client-side solution.
NOTE: I am using Windows to run iTunes and sync with the iPod.