[Matroska-general] Matroska in closed source products

[Hauke Duden]

Hello all,

I'm currently evaluating on whether we will include Matroska support in 
our free - but closed source - media player (Ashampoo Media Player+).

However, it seems that this is not possible with either of the two 
licenses you offer for your libraries. The GPL is of course not an 
option for closed source programs. And I'm not too familiar with the 
QPL, but it seems to me that it also requires applications using the 
libraries to be open-sourced.

Please correct me if I'm wrong, but the following part of the license 
seems to make that pretty clear:

"""
6. You may develop application programs, reusable components and other
software items that link with the original or modified versions of the 
   Software.  These items, when distributed, are subject to the 
following    requirements:
<snip>
      b. You must explicitly license all recipients of your items to use
         and re-distribute original and modified versions of the items in
         both machine-executable and source code forms.
<snip>
"""

If I understand this correctly, then "items" refers to application 
programs using the matroska libs and 6.b requires those to be open source.

However, I have seen commercial players with Matroska support. Have 
these programs implemented their own Matroska libraries from your specs 
or is there some aspect to this license that I don't understand?

Thanks for any insights,

	Hauke Duden