Development of Creative Commons licenses

[Daniel Carrera <daniel.carrera AT zmsl.com>]

Hello,

I assume you're familiar with the CC-friendly record label, Magnatune:

http://magnatune.com/

They offer free MP3s of all their albums under a Creative Commons 
license and you can buy CD-quality WAV files.

Practical question:  Are the WAV files automatically under the same CC 
license?

The two downloads are the same album and only differ in the quality and 
the format. I think this is an interesting question, and I hope someone 
has an answer. You can think of other cases where the same question 
might arise.

Another example, say I write a user guide for OpenOffice.org. I give you 
the guide in PDF format under a CC license, and if you like it I'll sell 
you the editable version (OpenDocument format) for $2. Is the editable 
version automatically under the same CC license?

Another example, can I say that I'll give you the user guide (above) as 
a PDF file under the CC-BY-NC or as an ODF file under CC-BY-SA? (notice, 
two imcompatible licenses).

Cheers,
Daniel.
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