I'm a bit surprised that we can't upload audio files as a post. I'm trying to start a "podcast" on my channel but have had a ton of problems with video encoding errors, so I thought I'd try just uploading an mp3, but apparently we can't.
It would seem if this were an option for people to use it would free up a lot of video space/resources. Certainly that would be cheaper for you than video storage and processing? I would think that if you have the capability to upload/store/process video, that adding audio only as an option would be relatively simple too.
Could this be something that's relatively simple to add as a canary feature and ultimately a site-wide feature?