Devin, do you mean a SoundCloud integration module? There're many ways to approach this, and I understand that when you talk about SC it may mean embeds from them? This would be relatively simple, but naturally, we'd need to support local audio upload and player. Depending on the goal it may be more like a "flat" sound-file sharing, which would probably work just fine as a part of Albums app update, or it may be more of a music-specific module with albums, album covers, "songs", etc. That's more of a niche app that we'd rather see someone else develop for UNA.
Would you mind sharing more about how you see it and what is your perfect example of the audio app?