Make sure you're logged in to Audiomack and go to https://audiomack.com/dashboard/manage. Note: you can only edit uploads on web at Audiomack.com and not in the app.
Next, Click on the uploads you want to edit using the settings symbol to the right of the title.
Once you're editing the song, keep selecting the "Next" button at the bottom of the page until you "Save And Finish."
*If you don't save and finish uploads, they won't appear privately or publicly.
You can always view the status of your uploads and edit them from your manage uploads page here: https://audiomack.com/dashboard/manage