GStreamer missing plugin audio

[Simone]

I use Ubuntu 11.10 64 bit.
Other player also reproduce MP3 format and all others audio format, but Rhythmbox return me an erorr message: "GStreamer missing plugin audio". Why? I have installed all the codec from gstreamer yet.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: rhythmbox 2.90.1~20110908-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Fri Nov 11 10:07:58 2011
ExecutablePath: /usr/bin/rhythmbox
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
ProcEnviron:
 LANGUAGE=it_IT:en_GB:it:en
 PATH=(custom, no user)
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: rhythmbox
UpgradeStatus: No upgrade log present (probably fresh install)

[dino99 (9d9)]

There is some issues using gstreamer0.10-pitfdll, so try without it (purge it)

[Simone (tigerjack89)]

Thanks for the fast reply!!
How can i purge them? Don't other applications use them?

[Simone (tigerjack89)]

Hem, I just re-installed RhythmBox for the third time and now it seems to work! Great!
However, there is no package named "gstreamer0.10-pitfdll"; terminal says it isn't installed.