Hi, I think there was a patch a while back to let ogg123 decode Opus: http://lists.xiph.org/pipermail/vorbis/2014-May/027752.html Are there any plans to incorporate that sort of Opus playback into ogg123, please? Although opusdec supports playback on Linux, I couldn't get it working on Mac OS X out of the box. ogg123 supports playback out of the box on OS X, so I'd be thrilled if this were implemented. Thanks. Cheers, KJ