Parole is a modern simple media player based on the GStreamer framework and written to fit well in the Xfce desktop.
aMule
aMule is an eMule-like client for the eD2k and Kademlia networks, supporting multiple platforms.
Currently aMule (officially) supports a wide variety of platforms and operating systems, being compatible with more than 60 different hardware+OS configurations.
aMule is entirely free, its sourcecode released under the GPL just like eMule, and includes no adware or spyware as is often found in proprietary P2P applications.
Rhythmbox
Rhythmbox is a music playing application for GNOME.
Olivia
Elegant music player for LINUX
Tauon Music Player
Ultra music player for the Linux desktop
Exaile
Simple interface. Powerful music management. Smart Playlists. Advanced track tagging. Automatic album art. Lyrics. Streaming Radio. Podcasts. Secondary output device support. Easily extensible with 50+ plugins available.
DeaDBeeF
DeaDBeeF lets you play variety of audio formats, convert between them, customize the UI almost any way you want, and use many additional plugins which can extend it even more.
Qoob
Simple music player.
Lollypop
Lollypop is a new GNOME music playing application.
CPod
Podcast application for Linux.