As many of you may have heard, Microsoft has made it official that Windows 11 will be featuring almost-native Android app compatibility, where the OS libraries will be available and apps will be executed natively on a hardware level, similar to how Linux on Windows currently works. You can find more info about this on Microsoft's website and a simplified introduction at the following article:
https://www.theverge.com/2021/6/24/22548428/microsoft-windows-11-android-apps-support-amazon-store
As you can see, there is very little work required to get Poweramp running on Windows 11
The development process would most likely be:
1) Port Poweramp over to the Amazon App store
2) Do some optimization to make sure it can communicate directly with the host system's audio driver
Thanks for reading, and have a wonderful day!