i've been a member of daytrotter for a few years now. i fully support the work they do, and was happy to pony up when they went to a pay model. every session they've done since they started in 2006, i believe, is up forever in their archives. they have a monthly fee now of $2, which is more than reasonable. you could pay it once and download, over the course of a month, everything they have, which is a lot. you can sign up for a seven-day free membership also. i don't believe there's a download limit even on a free week membership. or you could always wait until the new tmg session is posted, sign up for free and download it then. i trust daytrotter.
waiting to hear if the new mountain goats session is going to be webcast live, which is another new feature they've recently added. in that case, you pay $3 to watch the session being recorded, and get all-access to all the sessions on the site for that day as i understand it.
there are a number of ways to use daytrotter, and i highly encourage you all to at least take a look around if you haven't done so.