Well, I got the question so I think it’d be a good time to give the info.
Because the Live Music Blog: Jamcasts are not listed in the iTunes podcast directory (for reasons unbeknowst to myself), you have to manually add the podcast feed to iTunes to get it to manage the subscription. I found a nice little article [via Lifehacker] on using iTunes to subscribe to podcasts and it should be pretty easy to follow. They’ve got screenshots and everything…
Here’s the feed address to use for subscribing to Jamcasts on iTunes.