What are some alternatives?
When comparing Poweramp and Stellio Music Player, you can also consider the following products
foobar2000 - An advanced freeware audio player for the Windows platform.
Winamp - Winamp is a media player that allows users to play multiple-file formats, arrange media in a varied file-management system, and play unique media with AAC encoding.
VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
AIMP - AIMP : Free Audio Player : Официальный сайт программы
Rocket Player - Looking to download the best Android media player? Rocket Player from JRT Studio is a highly rated Android music app. And the best part is it's free.
Pulsar Music Player - Pulsar is tiny, ad-free and full featured music player with material design.