No help menu in app or way to upload sound files

This app is okay for a drum machine, but there is no specifications on how to upload your own sound files. I am a musician looking to improve my audio software and equipment and due to a tight budget, I found this app within price range but no specifications on how to upload files or record off the computer’s microphone. Could you develop the app again with these specifications.

My suggestion for this app is to be able to press and hold on a particular bank of sampling pads, the pads are displayed as normal, but gives you an option to assign a sound to a particular pad.

Big cat speedy rich about Sample Machine Pro, v2.0