Trouble with listen-up

Janina Sajka janina at
Wed Feb 9 11:18:55 EST 2005

Sorry. Checking again I find no encryption used by RNIB. Good for them.

The encryption spec requires an NDA. There should be a mechanism
documented somewhere at If not, I can put you in

The quadrupling of storage capacity on cassettes is a welcome side
benefit, but not the fundamental reason. After all, if they were only
into storage capacity, they'd have no reason to go through the expense
of a different tracking format.

Shane writes:
> On Wed, Feb 09, 2005 at 10:03:37AM -0500, Janina Sajka wrote:
> > Sina Bahram writes:
> > > RFB&D protects their daisy books with a propriotary encryption algorithm ...
> > > Does RNIB do the same?
> > 
> > 
> > Yes. It is definitely the case.
> Not as far as I can tell.  Nothing is encrypted on the CNIB
> title that I can find.  However, that's not to say I didn't
> miss something.
> > However, it would not be hard to write a module to open the content,
> > though the terms of licensing would not allow publishing the source.
> Do you have specs on how the encryption works?  The only
> info I came across suggests there is a player key involved.
> > The reason for this encryption is to meet legal copyright restrictions
> > on the distribution of this content. It's the computer equivalent of
> > making audio cassette talking books use half speed and open reel track
> > format, rather than standard cassette speed and standard track format.
> That and half speed four track effectively quadrupals the
> storage capacity of a single cassette.
> > > Good luck with this problem: I'd be interested in getting a solution to it,
> > > as I think it may lead to one, hopefully, for reading RFB&D daisy formats
> > > without having to pay them for the software and/or hardware, which I find
> > > ridiculous.
> Well, I solved that particular segfault but my message
> didn't make it to the list.  It seems the nccs.html on the
> disc referenced
> bagw001A.smil
> where the file on the disc was bagw001a.smil, note the case
> of the a, the open failed and listenup didn't handle that
> too well.  I fixed that but now it's segfaulting elsewhere. 
> Still looking into that.
> Best regards,
> Shane
> -- 
> Shane Wegner
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Janina Sajka				Phone: +1.202.494.7040
Partner, Capital Accessibility LLC	http://www.CapitalAccessibility.Com

Chair, Accessibility Workgroup		Free Standards Group (FSG)
janina at

If Linux can't solve your computing problem, you need a different problem.

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