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Level 1 and Level 2, the radio may fail to read files properly
and may be unable to play the file normally. UDF and
Apple HFS formats are not supported.
The radio uses the following limits for file systems:
• Maximum number of folder levels: 8
• Maximum number of files: 255
• Maximum number of folders. (The radio display of file
names and folder names is limited. For large numbers of
files and/or folders, the radio may be unable to display
the file name and folder name, and will assign a number
instead. With a maximum number of files, exceeding 20
folders will result in this display. With 200 files, exceed-
ing 50 folders will result in this display.)
Maximum number of characters in file/folder names:
• Level 1: 12 (including a separator ⬙.⬙ and a three-
character extension)
• Level 2: 31 (including a separator ⬙.⬙ and a three-
character extension)
Multi-session disc formats are supported by the radio.
Multi-session discs may contain combinations of normal
CD audio tracks and computer files (including MP3 files).
Discs created with an option such as ⬙keep disc open after
writing⬙ are most likely multi-session discs. The use of
multi-session for CD audio or MP3 playback may result in
longer disc loading times.
Supported MP3 File Formats
The radio will recognize only files with the *.MP3 exten-
sion as MP3 files. Non-MP3 files named with the *.MP3
extension may cause playback problems. The radio is
designed to recognize the file as an invalid MP3 and will
not play the file.
When using the MP3 encoder to compress audio data to an
MP3 file, the bit rate and sampling frequencies in the
following table are supported. In addition, variable bit
rates (VBR) are also supported. The majority of MP3 files
use a 44.1 kHz sampling rate and a 192, 160, 128, 96 or VBR
bit rate.
MPEG
Specification
Sampling
Frequency
(kHz)
Bit Rate (kbps)
MPEG-1 Audio
Layer 3
48, 44.1, 32 320, 256, 224,
192, 160, 128,
112, 96, 80, 64,
56, 48, 40, 32
454 MULTIMEDIA
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