You can choose another music player instead of the default player. The instructions are something like this depending on your phone:
- Go to Settings
- Go to Apps
- Select the app that is currently the default (e.g. Spotify)
- Scroll down to “Launch By Default” (or "Open by default").
- Tap “Clear Defaults”.
- Then open Sports Tracker and tap the music icon, it should show a pop-up asking what music player should be used.