@NEETzsche @marine @lain @hj @Moon FWIW, Funkwhale is using Audio activities for its uploads.
$ curl -H "Accept: application/activity+json" https://live.grumbulon.xyz/library/tracks/20116/ | jq '.type'
"Audio"I imagine deprecation of nonstandard Audio activities used for scrobbles might have something to do with potentially paving the road for supporting Audio activities proper. Leaving them both is nothing that transmogrifier couldn't handle, I imagine, but writing boilerplate to distinguish them can be haunting both from technical standpoint and as a reminder of bad decisions one made much earlier in development cycle.