Kiddie Records Weekly has an ongoing project of converting Golden Age Children Records from the 40s and 50s into mp3 format. Each week it posts a new one for you to download and enjoy.
Good for the kids and good for the kitsch.
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This is one of the best sites I've seen in a while. I have a bunch of these old records and I've been looking for a turntable to convert them. This saves me the trouble. I think it is worth downloading this entire site's catelog.
If you do not wish to take the time to download the recordings, you can purchase them at www.originaloldradio.com. This website has placed them on a set of MP3 CDs and they are not that badly prices.