The CD-DA subsystem has a caching tool that will store a processed CD's information, such as track information and mix points. The cache system means that a CD needs to be processed only once, therefore eliminating the need to process a cached CD before play.
OtsAV will cache a CD automatically after processing. If at any stage you require the CD cache entry to be cleared simply go to Options -> CD-DA -> Remove Cache Entry for CD in -> select the appropriate drive.