Hi,
A tip for cd-rom motors: remove the original magnet ring and replace it with neodymium magnets. It makes it easier for the controller to figure out rotor-speed and -position (larger back EMF for sensing).
Members of the do-it-yourself outrunner mailing list are very content with the services of Mr.George, he can even deliver to customer specification, not all magnets are on his site:
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club:
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Met vriendelijke groet ;-) Ron van Sommeren near Nijmegen, the Netherlands