aTunes is an open source audio player and organizer that is reminiscent of Apple's iTunes. Here's how you can install it in Ubuntu 14.04.
1. Open a terminal window.
2. Type in the following commands then hit Enter after each:
sudo add-apt-repository ppa:noobslab/apps
sudo apt-get update
sudo apt-get install atunes
3. If you prefer not to use the PPA listed above, you can opt to download aTunes from SourceForge or Fosshub. There are versions available for Windows and OS X, as well as for Linux.
aTunes supports a variety of audio formats such as mp3, ogg, wma, wav, flac and mp4. It also has tons of features, you can view a full list of them on the aTunes Wiki.
Image credit: aTunes
Source: Noobs Lab
Additional resources for aTunes
Additional Ubuntu resources