Matt’s music player of choice under ubuntu. Essentially does the same job as iTunes without the online sales bit. Playlists, external media, rating, album art, id3 tags etc
http://www.exaile.org/

Can I upgrade my version after having apt-get install(ed) it?
A quick visit to getdeb revealed a newer SoftwarePackage exaile_0.2.5b-1getdeb1_i386.deb so I downloaded that and installed it using the GUI(gdebi 0.1.4ubuntu13), clicked my desktop icon and … nothing! Invoking the app from the command line gave me this error

matt@precuntu:~$ exaile
Traceback (most recent call last):
File "/usr/bin/exaile", line 65, in ?
from xl import *
File "/usr/share/exaile/xl/tracks.py", line 18, in ?
import common, media, db, config, trackslist
File "/usr/share/exaile/xl/media.py", line 18, in ?
import mutagen, mutagen.id3, mutagen.flac, mutagen.oggvorbis
ImportError: No module named oggvorbis

This ubuntu forum link provided a source for the missing python-mutagen package so I was able to download, build and install as per the instructions there.