On the Xiaomi smartphone, we can select standard apps that always perform an action, such as the music app, so we can set the music app so that we're not always prompted before opening files.

Note: In this tutorial we will navigate to the standard apps and select the above mentioned standard app for music. The steps mentioned above are only for illustration purposes. Other options can be reached the same way.

Android 10 (MIUI 12.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Apps
Step 3:  Tap on  Manage apps
Step 4:  Open the  menu
Step 5:  Tap on  Default apps
  1. Open the Settings
  2. Tap on Apps
  3. Tap on Manage apps
  4. Open the menu
  5. Tap on Default apps

Xiaomi Instructions