Also does not recognise .opus files, "Opus data can be encapsulated in Ogg containers. The content of such Ogg Opus streams should be specified as audio/ogg; codecs=opus and for Ogg Opus files the .opus filename extension is recommended."
http://tools.ietf.org/pdf/draft-ietf-codec-oggopus-06.pdf
Also does not recognise .opus files, "Opus data can be encapsulated in Ogg containers. The content of such Ogg Opus streams should be specified as audio/ogg; codecs=opus and for Ogg Opus files the .opus filename extension is recommended."
http:// tools.ietf. org/pdf/ draft-ietf- codec-oggopus- 06.pdf