Mono MP3 audio is sped up when using symphonia-play

[n0samu]

symphonia-play seems to play mono MP3 audio at double-speed. I am testing on 64-bit Windows 10. Here is an example MP3 file that reproduces the issue: 427_muz1.zip
I was also able to reproduce it by converting any stereo MP3 to mono using ffmpeg -i stereo.mp3 -ac 1 mono.mp3, then playing the converted mono.mp3 file.
This issue isn't very important since it only affects symphonia-play, but I ran across it while testing other things so I figured I should log it.

[GameBakerStudio]

Is this still an issue for you? I had this error with other playing software, and fixed it. Can you provide some source code? I advise checking stuff like sample rate. I can help with using CPAL, as I find that easier.

[n0samu]

The symphonia-play source code is here https://github.com/pdeljanov/Symphonia/tree/master/symphonia-play/src