Activeforever Plextalk PTR2 Digital DAISY Player and Recorder - Manual (Page 92)

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• WAVE Files - The Wave format is Microsoft's standard audio file
format. PLEXTALK supports Wave files in PCM(Pulse Code
Modulation) format only.
• Ogg Vorbis Files - Ogg Vorbis is a free licensed audio compression
format using bit rates from 45kbps to 320kbps. PLEXTALK supports
all Ogg Vorbis bit rates.
NOTE: Please visit the web site, http://www.vorbis.com/ for further details
about this format.
14.2. About playing sequences.
This section gives you information about the playing sequence used for
playing files and folders.
• Playback of files - If there is a text file called “play list” in the folder,
PLEXTALK will follow the playing sequence specified in this file. If a
file of this type does not exist in the folder, PLEXTALK will playback
the files in the order of their file names. In this case, numbers take
precedence over alphabetical characters. For example, if one file is
called "123ABC" and a second file is called "ABC", the file "123ABC"
will play before the file called "ABC".
NOTE: The “play list” file normally has a file name extension of “m3u” and
the names of the audio files are written in the order that you want them
played.
• Playback of folders - If more than one folder exists on the CD or CF
card, the audio files will be played from the lowest level of the
folder structure in the first folder upwards before then playing the
files at the lowest level of the next folder structure. Finally, any files
at the root level will be played. The following example
demonstrates this idea:
At the Root level there is Folder 1, Folder 4, and File A.
Under Folder 1 there is Folder 2, Folder 3, and File B.
Under Folder 2 there is File E and File F.
Under Folder 3 there is File G and File H.
Under Folder 4 there is File C and File D.