Pliim - One click and be ready to go up on stage and present!
VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Hidden Bar - A ultra-light MacOS utility that helps hide menu bar icons.
AIMP - AIMP : Free Audio Player : Официальный сайт программы
Hocus Focus - A Mac menu bar utility that hides your inactive windows
foobar2000 - An advanced freeware audio player for the Windows platform.