Well, I'm not sure if this is exactly what you're looking for, but my cheap childbirth prep has been reading the Emergency Childbirth Manual (by Gregory White- you can download it for free online) to my husband for a refresher. Partly in preparation for a possibly fast labor, but also because it's written in the perfect matter of fact tone for a man to appreciate (at least mine does, anyway

. It covers the basics of labor and goes over what to expect of the woman in labor and the best ways to be helpful to her. I don't think I still have the link, but I'd be happy to send you the PDF if you want it.
My take on a cheap soundtrack has been the Lifescapes cd I got at Target for my daughter to sleep to. It's completely calming piano music (the one I got was Calming Rain). Anything meant for relaxing to meditate or sleep seems to be a good bet to me. I'd also go for Gregorian chants, but I haven't actually gotten that yet.
As for online resources, I've just focused on reading empowering birth stories. I've tried several sites with stories that I just didn't find particularly positive (like stories that focus on the pain or where everything went wrong), so I've ended up reading most all the stories on Laura Shanley's site (
http://www.unassistedchildbirth.com/unassisted-childbirth/birth-stories/). Even though I won't be planning an unassisted birth, it's wonderful to read so many stories of women who don't perceive labor as painful and who get the birth of their dreams. I know this is a very personal preference, though, as to what speaks to you most, but I benefit more from encouragement like that than a how-to for labor and relaxation.
So that's very specific since it's just what I have found myself doing, but I thought I'd share in case it helps!!
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