[opus] Opus 1.1b GUI

[Timothy B. Terriberry]

Clovis Lunel wrote:
> Emsytech has developed an Opus front-end GUI, allowing simple drag’n
> drop of wave files to test Opus 1.1b encoder/decoder features in
> real-time. The stream is internally encoded and decoded using dynamic
> user configuration, then played and/or saved into an output wave file.

That's great. We've had a bunch of requests for an OggDropXP replacement 
for Opus.