Sony CDX-F50M Operating Instructions - 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. About MP3 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. • The unit is compatible with the ISO 9660 level 1/level 2 format, Joliet/Romeo in the expansion format, ID3 tag version 1.0, 1.1, 2.2, 2.3 and 2.4, and Multi Session. • The maximum number of: - folders (groups): 150 (including root and empty folders). - MP3 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 32/64 (Romeo); ID3 tag is 15/30 characters (1.0, 1.1, 2.2 and 2.3), or 63/ 126 characters (2.4). 14 Playback order of MP3 files MP3 Folder (group) MP3 file (track) Notes • Be sure to finalize the disc before using on the unit. • When naming an MP3 file, be sure to add the file expansion ".mp3" to the file name. • If you play a high-bit-rate MP3, such as 320 kbps, sound may be intermittent. • During playback of a VBR (variable bit rate) MP3 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, ATRAC CD and MP3. - 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 ATRAC CD or MP3 session is played. If the disc has no data in any of these formats, "NO MUSIC" is displayed. About ATRAC CD ATRAC3plus format ATRAC3, which stands for Adaptive Transform Acoustic Coding3, is audio compression technology. It compresses audio CD data to approximately 1/10 of its original size. ATRAC3plus, which is an extended format of ATRAC3, compresses the audio CD data to approximately 1/20 of its original size. The unit accepts both ATRAC3 and ATRAC3plus format. ATRAC CD ATRAC CD is recorded audio CD data which is compressed to ATRAC3 or ATRAC3plus format using authorized software, such as SonicStage 2.0 or later, or SonicStage Simple Burner. • The maximum number of: - folders (groups): 255 - files (tracks): 999 • The characters for a folder/file name and text information written by SonicStage is displayed. For details on ATRAC CD, see the SonicStage or SonicStage Simple Burner manual.