Mixing Station has a beta program where new versions of the app are tested before they are released.
If you want to join the beta tester group click on one of the following links:
You will receive the beta version as an regular update from the google play store.
To leave the beta group again, just uninstall the app from your device.
Beta versions might contain some bugs or crash in certain situations.
Only join the group if you are okay with that.