centos6.0加源安装qmmp出错，请指点

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centos6.0加源安装qmmp出错，请指点。该怎么办，这些信息说明什么？这个是terminal里的安装信息：
Loaded plugins: fastestmirror, presto, priorities, refresh-packagekit
Loading mirror speeds from cached hostfile
epel/metalink                                            | 3.4 kB     00:00     
* base: centos.ustc.edu.cn
* epel: mirrors.ustc.edu.cn
* extras: centos.ustc.edu.cn
* rpmforge: ftp.riken.jp
* rpmfusion-free-updates: mirrors.ustc.edu.cn
* rpmfusion-nonfree-updates: mirrors.ustc.edu.cn
* updates: centos.ustc.edu.cn
base                                                     | 3.7 kB     00:00     
epel                                                     | 4.3 kB     00:00     
epel/primary_db                                          | 3.9 MB     00:16     
extras                                                   | 3.0 kB     00:00     
rpmforge                                                 | 1.9 kB     00:00     
rpmfusion-free-updates                                   | 2.7 kB     00:00     
rpmfusion-nonfree-updates                                | 2.2 kB     00:00     
updates                                                  | 3.5 kB     00:00     
1373 packages excluded due to repository priority protections
Setting up Install Process
Package R-2.15.1-1.el6.i686 already installed and latest version
Nothing to do
[root@iThink qi]# yum search qmmp
Loaded plugins: fastestmirror, presto, priorities, refresh-packagekit
Loading mirror speeds from cached hostfile
* base: centos.ustc.edu.cn
* epel: mirrors.ustc.edu.cn
* extras: centos.ustc.edu.cn
* rpmforge: ftp.riken.jp
* rpmfusion-free-updates: mirrors.ustc.edu.cn
* rpmfusion-nonfree-updates: mirrors.ustc.edu.cn
* updates: centos.ustc.edu.cn
1373 packages excluded due to repository priority protections
epel/pkgtags                                             |  325 B     00:00     
============================== N/S Matched: qmmp ===============================
qmmp-devel.i686 : Header files for qmmp
qmmp.i686 : Qt-based multimedia player

  Name and summary matches only, use "search all" for everything.
[root@iThink qi]# yum install qmmp
Loaded plugins: fastestmirror, presto, priorities, refresh-packagekit
Loading mirror speeds from cached hostfile
* base: centos.ustc.edu.cn
* epel: ftp.jaist.ac.jp
* extras: centos.ustc.edu.cn
* rpmforge: ftp.riken.jp
* rpmfusion-free-updates: mirrors.163.com
* rpmfusion-nonfree-updates: mirrors.163.com
* updates: centos.ustc.edu.cn
1373 packages excluded due to repository priority protections
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package qmmp.i686 0:0.5.1-1.el6 will be installed
--> Processing Dependency: libgme.so.0 for package: qmmp-0.5.1-1.el6.i686
--> Processing Dependency: libbs2b.so.0 for package: qmmp-0.5.1-1.el6.i686
--> Processing Dependency: libmodplug.so.1 for package: qmmp-0.5.1-1.el6.i686
--> Running transaction check
---> Package game-music-emu.i686 0:0.5.5-1.el6 will be installed
---> Package libbs2b.i686 0:3.1.0-2.el6 will be installed
---> Package libmodplug.i686 0:0.8.7-1.el6.rf will be updated
--> Processing Dependency: libmodplug.so.0 for package: vlc-1.1.13-1.el6.rf.i686
--> Processing Dependency: libmodplug.so.0 for package: gstreamer-plugins-bad-0.10.19-3.el6.rf.i686
---> Package libmodplug.i686 1:0.8.8.3-2.el6 will be an update
--> Finished Dependency Resolution
Error: Package: gstreamer-plugins-bad-0.10.19-3.el6.rf.i686 (@rpmforge)
           Requires: libmodplug.so.0
           Removing: libmodplug-0.8.7-1.el6.rf.i686 (@rpmforge)
               libmodplug.so.0
           Updated By: 1:libmodplug-0.8.8.3-2.el6.i686 (epel)
               Not found
Error: Package: vlc-1.1.13-1.el6.rf.i686 (@rpmforge)
           Requires: libmodplug.so.0
           Removing: libmodplug-0.8.7-1.el6.rf.i686 (@rpmforge)
               libmodplug.so.0
           Updated By: 1:libmodplug-0.8.8.3-2.el6.i686 (epel)
               Not found
You could try using --skip-broken to work around the problem
** Found 2 pre-existing rpmdb problem(s), 'yum check' output follows:
R-2.15.1-1.el6.i686 is a duplicate with R-2.13.0-2.el6.rf.i686
R-2.15.1-1.el6.i686 has missing requires of R-devel = ('0', '2.15.1', '1.el6')