VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Poweramp - Key Features.
AIMP - AIMP : Free Audio Player : Официальный сайт программы
MoboPlayer - MoboPlayer is a video player for Android that plays most video formats.
Musicolet Music Player - Musicolet is a small yet feature-rich offline Music Player for Android.
VPlayer - VPlayer - a free music player for VKontakte.