Sony CDX GT310 Instruction Manual - Page 14

• Before playing, clean the discs with a commercially available cleaning cloth. Wipe each disc from the center out. Do not use solvents such as benzine, thinner, commercially available cleaners, or antistatic spray intended for analog discs. Notes on CD-R/CD-RW discs • Some CD-Rs/CD-RWs (depending on the equipment used for its recording or the condition of the disc) may not play on this unit. • You cannot play a CD-R/a CD-RW that is not finalized. Music discs encoded with copyright protection technologies This product is designed to play back discs that conform to the Compact Disc (CD) standard. Recently, various music discs encoded with copyright protection technologies are marketed by some record companies. Please be aware that among those discs, there are some that do not conform to the CD standard and may not be playable by this product. Note on DualDiscs A DualDisc is a two sided disc product which mates DVD recorded material on one side with digital audio material on the other side. However, since the audio material side does not conform to the Compact Disc (CD) standard, playback on this product is not guaranteed. About MP3/WMA files MP3, which stands for MPEG-1 Audio Layer-3, is a music file compression format standard. It compresses audio CD data to approximately 1/10 of its original size. WMA, which stands for Windows Media Audio, is another music file compression format standard. It compresses audio CD data to approximately 1/22* of its original size. * only for 64 kbps • The unit is compatible with the ISO 9660 level 1/ level 2 format, Joliet/Romeo in the expansion format, and Multi Session. • The maximum number of: - folders (albums): 150 (including root and empty folders). - MP3/WMA files (tracks) and folders contained in a disc: 300 (if a folder/file names contain many characters, this number may become less than 300). - displayable characters for a folder/file name is 32 (Joliet), or 64 (Romeo). • ID3 tag versions 1.0, 1.1, 2.2, 2.3 and 2.4 apply to MP3 only. ID3 tag is 15/30 characters (1.0 and 14 1.1), or 63/126 characters (2.2, 2.3 and 2.4). WMA tag is 63 characters. Playback order of MP3/WMA files MP3/WMA Folder (album) MP3/WMA file (track) Notes • When naming an MP3 file/WMA file, be sure to add the file extension ".mp3"/".wma" to the file name. • During playback of a VBR (variable bit rate) MP3/ WMA file or fast-forward/reverse, elapsed playing time may not display accurately. • When the disc is recorded in Multi Session, only the first track of the first session format is recognized and played (any other format is skipped). The priority of the format is CD-DA and MP3/WMA. - When the first track is a CD-DA, only CD-DA of the first session is played. - When the first track is not a CD-DA, an MP3/WMA session is played. If the disc has no data in any of these formats, "NO MUSIC" is displayed. Notes on MP3 • Be sure to finalize the disc before using on the unit. • If you play a high-bit-rate MP3, such as 320 kbps, sound may be intermittent. Notes on WMA • Files made with lossless compression are not playable. • Files protected by copyright are not playable. If you have any questions or problems concerning your unit that are not covered in this manual, consult your nearest Sony dealer.