Audius 1.3.3 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free Mac app was originally designed by Audius, Inc. The program belongs to Audio & Video Tools. We recommend checking the downloaded files with any free antivirus.
From the developer:
Audius is a streaming platform build for musicians. The app lets you build a fanbase, share your work in progress, and then publish your completed tracks for all the world to hear. You have the chance to create, grow, and monetize, all without the need to graduate off the platform or sign a record deal.
You may want to check out more software for Mac, such as RadioRec, CoverToaster or StreamViewer, which might be similar to Audius.