Recently, on a well-known 
Linux site , I found out about the free Amarok 1.4 port on QT4. Honestly, since the days of KDE 3.5, I lacked just such a player. With the release of the fourth KDE branch, Amarok was completely ruined. In any case, I liked the old version more.
Here, the 
Clementine developers come to our rescue, returning the lost and presenting it in a new form.
Main functions
- Search and play music from the local library
 - Listening to internet radio, Last.fm and SomaFM
 - Support M3U and XSPF playlists
 - Editing tags MP3 and OGG files, organizing a music collection
 - Download missing album artwork from Last.fm
 - Cross platform Works on Windows, Mac OS X and Linux
 - Native desktop notifications on Linux (libnotify) and Mac OS X (Growl), as well as transparent pop-up notifications in Windows 7 starting with 0.3 beta (with adjustable transparency and color)
 
Screenshots
Main interface

Notification settings

')
Tag Editor

Cover editor

Not done yet \ ToDo
- Automatic copying of files from external media to the library
 - IPod and other MP3 player support
 - Hotkeys on Windows and Mac OS X
 - Save playlist
 - Automatic tag completion
 
Total
We have a young developing project of a good music player with potential. At the moment, the player is an amateur. If you decide to put it as the main one as me - version 0.2 is the most stable so far, in version 0.3 I had errors with playback and FLAC didn’t play at all. That's why it is beta.
Download
Download the player for any supported platform here:
code.google.com/p/clementine-player/downloads/listAlso, the player (version 0.2) is present in the repositories of various Linux distributions. Similarly, there is in Gentoo (portage), Arch (Aur).
Direct links:
0.2 
WIN LIN (Deb, 32) LIN (Deb, 64) MAC SRC0.3 
WIN MACThe rest of the packages look for the link above.