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Old 08-26-2008, 03:00 PM
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BobbyRS BobbyRS is offline
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Join Date: Oct 2007
Location: USA
Posts: 6,575

M4B is identical to the M4A format. They are both an audio file wrapped within MPEG-4 container format. The only reason for the different extension is so that iTunes and iPods can recognize the file as an audio book rather than a normal audio file, which allows for features like bookmarking.

Is there any software that would convert the files into Zen compatibles and cut them into chapters?
Maybe try renaming the m4b files to m4a files and then converting them to MP3 using iTunes. Once they are in MP3 format, they should be playable on the Sleek.

From here:

Audio book and podcast files, which also contain metadata including chapter markers, images, and hyperlinks, can use the extension <TT>.m4a</TT>, but more commonly use the <TT>.m4b</TT> extension. An <TT>.m4a</TT> audio file cannot "bookmark" (remember the last listening spot), whereas <TT>.m4b</TT> extension files can. Users can rename <TT>.mp4</TT> or <TT>.m4a</TT> file extensions to <TT>.m4b</TT> to activate these features.
~Light travels faster than sound, which is why some people appear to be bright until they speak~

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