Sayonara is a small, clear and fast audio player for Linux written in C++, supported by the Qt framework. It uses GStreamer as audio backend.
Media Player Classic
Media Player Classic Home Cinema (mpc-hc) is considered by many to be the quintessential media player for the Windows desktop. Media Player Classic Qute Theater (mpc-qt) aims to reproduce most of the interface and functionality of mpc-hc while using libmpv to play video instead of DirectShow.
Gnome Connections
A remote desktop client for the GNOME desktop environment
QMPPlay2
QMPlay2 is a video and audio player. It can play all formats supported by FFmpeg, libmodplug (including J2B and SFX). It also supports Audio CD, raw files, Rayman 2 music and chiptunes. It contains YouTube and MyFreeMP3 browser.
kafeinina
Kaffeine is a media player. What makes it different from the others is its excellent support of digital TV (DVB). Kaffeine has user-friendly interface, so that even first time users can start immediately playing their movies: from DVD (including DVD menus, titles, chapters, etc.), VCD, or a file.
Haruna
Haruna is an open source video player built with Qt/QML on top of libmpv.
Vidiny
Pragha is a Lightweight Music Player for GNU/Linux, based on Gtk, sqlite, and completely written in C, constructed to be fast, light, and simultaneously tries to be complete without obstructing the daily work. 
Videos
Also known as Totem, Videos is a movie player designed for GNOME.
GMusicBrowser
A customizable open-source jukebox for large collections
KBlocks
KBlocks no kilalao mitongilana mahazatra. Ny hevitra dia ny hametraka ireo sakana mianjera mba hamoronana tsipika marindrano tsy misy banga. Rehefa vita ny tsipika iray dia esorina izany, ary misy toerana bebe kokoa ao amin'ny kianja filalaovana. Rehefa tsy ampy ny toerana hianjeran'ny sakana dia tapitra ny lalao.