MP3 overview
Notes on MP3 and WMA
• MP3 is short for MPEG Audio Layer 3 and refers to an audio compression technology standard.
• This product allows playback of MP3 files on CD-ROM, CD-R or CD-RW discs.
• The unit can read MP3 files written in the format compliant with ISO 9660. However it does not support the MP3 data written
by the method of packet write.
• The unit can not read an MP3 file that has a file extension other than “.mp3”.
• If you play a non- MP3 file that has the “.mp3” extension, you may hear some noise.
• In this manual, we refer to what are called “MP3 file” and “folder” in PC terminology as “track” and “album”, respectively.
• Maximum number of directory level is 8, including the root directory. Maximum number of files and folders per disc is 256.
• The unit may not play tracks in the order of Track numbers.
• The unit plays only the audio tracks if a disc contains both audio tracks and MP3 files.
• When playing a disc of 8 kbps or “VBR”, the elapsed playing time in the display window will not be correct and also the intro
play may not function properly. “VBR”: Variable Bit Rate.
• The unit supports the playback of WMA files. The playback of ID3 tags for WMA format is not guaranteed, it depends on
versions and availability of Cyrillic alphabet.
• WMA (Windows Media Audio) - music data compression format, created by Microsoft Corporation. This format uses coding
algorithm for compression of initial audio-record, greatly decreasing the file size, but, saving the good sound quality even when
the bit rate is low (for example, 64 Kbit/s).
• Remember that the unit may not play the tracks in order they are written on disc.
Notes on creating your own CD-Rs or CD-RWs containing MP3 files
• To enjoy high quality sound, we recommend converting to MP3 files with a sampling frequency of 44.1 kHz and a fixed bit rate
o f 128 kbps.
• DO NOT store more than 256 MP3 files per disc.
• For ISO 9660 - compliant format, the maximum allowable depth of nested folders is 8, including the root directory (folder).
• When CD-R disc is used, playback is possible only for discs, which have been finalized.
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