Here is a guide to install Audacious audio player on Ubuntu 13.04. You can install Audacious by adding the WebUpd8 PPA for Audacious maintained by Alin Andrei.
Audacious is an open source audio player. A descendant of XMMS, Audacious plays your music how you want it, without stealing away your computer’s resources from other tasks. Drag and drop folders and individual song files, search for artists and albums in your entire music library, or create and edit your own custom playlists. Listen to CD’s or stream music from the Internet. Tweak the sound with the graphical equalizer or experiment with LADSPA effects. Enjoy the modern GTK-themed interface or change things up with Winamp Classic skins. Use the plugins included with Audacious to fetch lyrics for your music, to set an alarm in the morning, and more. Visit the Audacious Homepage.
To add the PPA and install Audacious open a terminal window (press Ctrl+Alt+T) and copy+paste the following lines:
sudo add-apt-repository ppa:nilarimogard/webupd8 -y
sudo apt-get update && sudo apt-get install audacious audacious-plugins -y
When the installation is finished you can close the terminal window and to start Audacious press the SuperKey and type: audacious
Features
Audacious contains built-in gapless playback. Default codec support: MP3, Advanced Audio Coding (AAC and AAC+), Vorbis, FLAC, Wavpack, Shorten (SHN), Musepack, TTA (codec), Windows Media Audio (WMA), Apple Lossless (ALAC), 150 different module formats, Several chiptune formats: AY, GBS, GYM, HES, KSS, NSF, NSFE, SAP, SPC, VGM, VGZ, VTX, WAV formats provided by libsndfile plugin and CD Audio.
Plugins
Audacious owes a large portion of its functionality to plugins, including all codecs. More features are available via third-party plugins. Current versions of the Audacious core classify plugins as follows (some are low level and not user-visible at this time):
Decoder plugins, which contain the actual codecs used for decoding content.
Transport plugins, which are lowlevel and implemented by the VFS layer.
General plugins, which provide user-added services to the player (such as sending tracks with AudioScrobbler)
Output plugins, which provide the audio system backend of the player.
Visualization plugins, which provide visualizations based on fast Fourier transforms of the wave data.
Effect plugins, which provide various sound processing on the decoded audio stream
Container plugins, which provide support for playlists and other similar structures.
Lowlevel plugins, which provide miscellaneous services to the player core and are not categorized into any of the other plugins.
Skins
Audacious has full support for Winamp 2 skins, and as of version 1.2, some free-form skinning is possible. Winamp .wsz skin files, a type of Zip archive, can be used directly, or can be unarchived to individual directories. The program can use Windows Bitmap (.bmp) graphics from the Winamp archive, although native skins for Linux are usually rendered in Portable Network Graphics (.png) format. Audacious 1.x allows the user to adjust the RGB color balance of any skin, effectively making a basic white skin equivalent to millions of skins of different hues.