In case you like to add some image or video to your audio: DTube is possible, but not that stable as well. 3speak is another video platform like YouTube, I think more stabble. Both use the Steem blockchain. DSound is indeed not very stable, but the only audio platform I know using Steem blockchain.

You can also post to Soundcloud and copy the embedded code into a Steemit blog; It accepts it. You can even change the link in this post. As far as I know, your post is open for editing 7 days after publication.