“At issue in the legal threat is Apple’s well-received iDVD application, which permits users to burn DVDs only on internal drives manufactured by Apple. In unmodified form, it does not permit writing to external drives manufactured by third parties.
That means Macintosh owners with older computers or laptop computers, or people who opted not to buy the "Superdrive"-equipped Macs, could not use iDVD to save movies. In response, Other World Computing began bundling a product called DVD Enabler with its external Mercury Pro DVD-R/RW FireWire drive. DVD Enabler modified iDVD so the application would save completed DVDs to a FireWire-connected drive. A press release from Other World Computing dated Aug. 12 said the company "will no longer market its DVD Enabler software, effective immediately."”