Use APKPure App
Get PowerAMP as default MP3 Player old version APK for Android
Utility App, it registers the extension "mp3" to be opened with PowerAMP. For example, when opening a mp3 from the "Downloads" folder.
Please DO NOT CONFUSE, this is NOT a MP3 Player, This App, is a utility to send the m3 you try to open to another app named "poweramp".
The thing is, that "clicking" a mp3 in for example the "Downloads" folder in some phone setups does not open "poweramp". This app fix that.