Update 20121024: Read this Opus (CELT) proposal for DRM by Michael Feilen. Michael also added some clarification on rights and pricing of AAC+ via the DRMNA Yahoo Group. Read his post here.
Our friend Stephan Schaa (of HCJB Global Germany and Pappradio fame) wrote to the DRMNA Yahoo Group this morning..."
Adding
Opus as a free codec to the DRM System would give many benefits: At the
moment you have to pay royalties for the use of the "better" codecs AAC+ for
example. This has to be done if you produce receivers (for less than 1000 it's
free, maybe this is the reason that the number of units for DRM Receivers are so
small everytime), but the "bigger money" is made on the encoder side: about
$4000 (or more) have to be paid to dolby if you want to use AAC+. If - for
example - Brasil would opt to the DRM System and insists on a opus as free
codec, I think this would be a good idea..."