So I'm syncing files to my phone and converting any lossless files to opus. But on android, the files have a mp3 extension. I know for a fact the opusenc.exe is being used because I can see it utilizing my cpu in task manager. When I inspect the files in windows, the codec reported is mp3 but the bitrate is also 0kb/s. Does Opus use .mp3 as a file extension/container for android playback?