VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Chili Piper - Chili Piper is an intelligent calendar for Sales teams, to book their own meetings or set appointments for other teams.
AIMP - AIMP : Free Audio Player : Официальный сайт программы
MeetNotes - Increase Productivity with Meeting Notes Tool. More effective minutes, Prepare Agenda, Collaborative Notes & Action Items.
foobar2000 - An advanced freeware audio player for the Windows platform.
Doodle - Make meetings happen. With Doodle, scheduling becomes quick and easy.