Rockbox mail archive
Subject: Re: Audible.com mp3 decryption?
From: Chris Houghten (chris_at_houghten.com)
for the same reason that they are not making it play any other formats... It
would have to do the decrypting live and the cpu is not really big enough
for that process.. I would be wililng to bet that most if not all of the
devices that do support this audible format have a chip specifically for
this process and the Archos does not.
----- Original Message -----
From: "Jonah, Jim" <Jim.Jonah_at_compuware.com>
Sent: Monday, May 12, 2003 12:15 PM
Subject: RE: Audible.com mp3 decryption?
> That's why I asked the question.
> The bookmarking feature covers one of the requirements.
> Since Audible states they give away their toolkit I would assume that
> toolkit unecrypts the file, which could then be played as a MP3 file. I
> would assume their toolkit would expose the markers within the file, which
> could be turned into bookmarks.
> Since their toolkit is not open source, I would assume that it could just
> "linked" at compile time, so that they wouldn't have to freely distribute
> the source.
> Given those assumptions, I think that it might be possible to pull this
> -----Original Message-----
> From: ajf [mailto:ajf_at_midmaine.com]
> Sent: Monday, May 12, 2003 11:34 AM
> To: rockbox_at_cool.haxx.se
> Subject: Re: Audible.com mp3 decryption?
> This is from the Audible web site FAQ:
> In order to ensure a pleasurable listening experience for spoken-word
> programs that typically are several hours in length or longer, as well as
> for Audible to obtain the distribution rights to the brand-name audio
> programs we have available, Audible requires that AudibleReady digital
> devices meet a certain set of minimum standards. These standards apply to
> digital music players and other audio-enabled devices, such as PDAs.
> Audible offers a formal specification of these minimum requirements to all
> digital device manufacturers. Following are some of the key elements in
> An AudibleReady device MUST be able to remember the position last heard
> each Audible audio program on the device - so if there are 3 different
> programs on the player (as tracks 1, 2 and 3), the player must remember
> listener's 3 current play positions in each of the programs. This memory
> must be maintained when the device is switched off or loses power (e.g.
> battery runs out). It would be impractical to expect a listener to
> reposition at the last listening point each time the device is turned on
> turned on. We use this playback position memory to update the device
> contents with more of a long title that doesn't fit into the device's
> An AudibleReady device MUST not allow an unencrypted copy of the audio
> program to be easily copied off the device. To do this, the device must
> support some form of Rights Management, or otherwise encrypt the audio
> it is placed on the device. This capability is required by the majority of
> Audible's content providers, who are providing the audio through Audible
> with the understanding that they and their "artists" (writers, in this
> will be paid royalties for each program distributed.
> AudibleReady devices MUST provide some means to navigate sections of audio
> within a single Audible program. For example, Audible inserts "section
> markers" at the start of each article in a newspaper or magazine
> publication's Audible edition. Most players consider a single Audible file
> to be like a "track" of a CD - so special logic is required to have the
> player move forward or backward to "sections" within a track, versus
> forward and backward between tracks.
> Lastly, while not an "absolute" requirement, most AudibleReady devices
> support one of the voice-specific audio compression formats that Audible
> uses. These voice formats allow for high quality spoken-word audio to be
> created with much smaller file sizes than would be required for the MP3
> format (used for music). However, Audible does produce an MP3 format to
> support those manufacturers that are unwilling or unable to support one of
> our other formats (e.g. Philips Rush).
> Audible has discussed the manufacture of AudibleReady devices with most
> major electronics manufacturers. Audible charges no fee for AudibleReady
> functionality. It is our goal to make as many players AudibleReady as
> Jonah, Jim writes:
> > Thoughts on approaching audible.com to see if rockbox can playback their
> > encrypted .mp3s?
> > -----------------
> > "Real programmers don't comment!
> > It was hard to write, It should be hard to read!"
> > -Unknown
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Page was last modified "Jan 10 2012" The Rockbox Crew