"redbook" CD's are "standard everyday CD's". This term is used to differentiate it from the "specialty" CD's like Super Audio CD's ( SACD ), CD-R / CD-RW's, Video CD's, etc... Due to having different formats, standards and technical aspects, it became necessary to seperate and categorize the different types of CD's for sake of clarity. The "redbook" is the set of specifications that lists the standards for what we think of as the "standard" CD. Sean
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