I like to create little worlds in spatial chat, and one thing that is sorely missing from such an audio driven space is the ability to embed lone audio files. I imagine this feature working just like pinned video and image files however, it would just be a sound invisible to all but the host. This would also add interesting spatialization for non-sighted folks who could then navigate the space with sounds.
This is a feature request from NOLT: https://spatialchat.nolt.io/82
It has 8 UPVOTES there.