Most are MP3 files, while some are AAC. So yes, the empeg would be able to have the MP3 ones transferred manually to it to listen to them. Though I think the poster was wishing for a more automated way.

I've personally just gotten used to using the iPod for podcasts, since it does niceties like sync shows automatically from iTunes, including the playback position. So I can listen to one partially in the car, then come home, sync, and resume playback via AirTunes to somewhere in the house. Syncs also only take a matter of 30 seconds typically, so it is a lot easier to deal with on a daily basis then the 5-10 minute sync ordeal that is my empeg with 50gigs of music.

I went with an iPod nano for the podcasts, so it's not quite as dangerous in the car to control. The placement of the headphone jack and the small size means I can plug it into the wire I have run in the car to the aux in, and the Nano stays in place simply due to the plug holding it there.