Micro Center - How to make an MP3 play as a Notification on Android Jelly Bean OS
Galaxy S21/Ultra/Plus: How to Set a Custom MP3 Song as a Gmail Notification Sound - YouTube
GitHub - yuxiaohui78/Android-Custom-Notification: Android custom notification for mp3 player
T92 Smart Watch Tws Bluetooth Headset Two In One Mp3 Local Music Playing Sms Notification Heart Rate Positioning Smart Watch - Smart Watches - AliExpress
Oneirophone Notification Sound (for phone) MP3 | The Lucid Guide
Upcoming notification options to replace the notification sound & icon. – App Cloner
NativeScript android play sound on notification - Stack Overflow