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MP3 mode
On the Los Angeles MP71 you can also play
CD-Rs containing MP3 music files.
MP3 is a process developed by the Fraun-
hofer Institute for compressing CD audio data.
Compression allows data to be reduced to
around 10% of their original size without a
noticeable loss in quality (at a bit rate of 128
Kbit/s). If a lower bit rate is used to convert
CD audio data to MP3, you can create small-
er files but there will be a loss of quality.
Preparing the MP3 CD
The various combinations of CD burners, CD
burning software and CD blanks may lead to
problems arising with the ability to play cer-
tain CDs. If problems occur with your own
burned CDs, you should try another brand of
CD blank or choose another blank colour.
Best results are achieved with CD blanks that
provide 74 minutes of playing time.
The format of the CD must be ISO 9660 Lev-
el 1 or Level 2. Other formats cannot be
played reliably.
Avoid multi-sessions. If you write more than
one session to the CD, only the first session
will be detected.
In order to avoid overly long access times,
you should not create more than 20 directo-
ries on any MP3-CD that you want to play on
the Los Angeles MP71 (though a maximum
of 127 directories are technically possible).
These directories can be individually select-
ed on the Los Angeles MP71.
Each directory can contain up to 254 tracks
and subdirectories, which can also be select-
ed. A maximum of 8 levels of directories are
allowed.
Fig. 1 Fig. 2
D01
D02
T001
T005
T004
T003
T002
D03
T001
T006
T005
T004
T003
T002
T011
T007
T008
T009
T010
D04
T001
T006
T005
T004
T003
T002
T007
D05
D01
T001
T006
T005
T004
T003
T002
T011
T007
T008
T009
T010
Since using some burner software can lead
to inconsistencies in the way items are num-
bered, you should ensure that the root direc-
tory D01 either contains only subdirectories
containing tracks (Fig. 1) or only tracks
(Fig. 2).
Each track can be named using the PC. The
directory name can be displayed in the Los
Angeles MP71’s display. Name the directo-
ries and tracks using your CD burner software.
The software’s operating instructions will pro-
vide details on how to do this.
Note:
● When naming directories and tracks you
should avoid using special characters.
If you like your files to be in the correct order,
you should use burner software that places
files in alphanumerical order. If your software
does not provide this feature, you can also
sort the files manually. To do so, you should
MP3 MODE