22 K-521Discs must be finalized during writing.zDepending on the equipment or recording mode used for re-zcording onto a CD-R or CD-RW disc, and depending on the typeof CD-R or CD-RW disc used, you may not be able to play thedisc on this system.You may not be able to play discs that do not conform to the CDzstandard, such as Copy Control CDs.Never connect any other device besides USB flash memoryzor a USB mass storage class compliant digital audio player tothe [ USB] terminal. Note that Kenwood will not be heldliable for any losses related to malfunction, damage, or data lossdue to connection of any other type of device.Important InformationSupported MediaUSB mass storageclass compliant digitalaudio playerCD-R/CD-RW discs re-corded in CD-DA formatMP3/WMA fi les recordedon CD-R/CD-RW discsExplanationMedia Icon in this manualPrecautions when writing data to mediaDiscs recorded in Packet Write mode or UDF (Universal Disc Format) cannot be played.zWhen writing data to a disc, always close the session or finalize the disc. The disc may not play properly if you do not closezthe session or finalize the disc.Depending on the specifications of the writing software used, the recorded folder names and file names may not be dis-zplayed correctly.Playback for multi-session discs or discs that contain large numbers of folders may take longer to begin than for normalzdiscs.If you write audio files and music CD tracks (CD-DA format) to the same disc, the disc may not play correctly.zBefore writing audio files to a disc, check that the files play back correctly on the PC being used to write the files.zAfter you finish writing, check that the written files are played back correctly.Use the correct file extensions (mp3, wma, m4a) in the names of audio files. Files without file extensions will not play. Also,zdo not use audio file extensions (mp3, wma, m4a) for files that are not audio files.For more information on file extensions, see on the right.In this manual, MP3, WMA and AAC files are referred to collectively as “audio files”.zUSB fl ash memoryUSBCommercially availablemusic CDsCD