I use FC4, and I used YUM to install xmms using "yum install xmms".
Well, apparently, FC4 version of xmms does not ship with mp3, so I downloaded the xmms-mp3 pack from the website. When I try to install it, I get this:

[bonniehandi@localhost ~]$ su
Password:
[root@localhost bonniehandi]# rpm -Uvh xmms-mp3-1.2.10-0.lvn.3.4.src.rpm
warning: xmms-mp3-1.2.10-0.lvn.3.4.src.rpm: Header V3 DSA signature: NOKEY, key ID a109b1ec
1:xmms-mp3 warning: user machbuild does not exist - using root
warning: group machbuild does not exist - using root
########################################### [100%]
warning: user machbuild does not exist - using root
warning: group machbuild does not exist - using root
[root@localhost bonniehandi]#

1) The missing gpg key is easy to fix:

rpm --import http://rpm.livna.org/RPM-LIVNA-GPG-KEY

2)Then follow the configuration information for livna.org and install livna-release-4-0.lvn.5.4.noarch.rpm as described here: http://rpm.livna.org/configuration.html (There will even be an option in FireFox to install it when you download it.)

3) Then run:

yum install xmms*
( or “yum install xmms-mp3”)

Keywords: FC4 xmms mp3 livna

xmms-mp3-1.2.10-0.lvn.3.4.src.rpm is a source rpm, which only contains source code and rpm spec etc to build a binary rpm.

yum is an excellent tool as above mentioned, make good use of it.

Thanks. I didn't have the livna repository. So that just solved my puzzle, I was wondering why everyone told me to use yum, when yum search xmms-mp3 didn't return a result.

“yum search xmms-mp3" returns “xmms-mp3.i386 1.2.10-0.lvn.3.4" on one of my FC4 systems.

Try looking for anything in livna:

yum list available *.lvn.*

That should return a long list of packages. If it finds nothing and no errors messages occur, then it tends to indicate that livna has not been added as a yum source.

Did you install the livna-release package as is described on the configuration page under “FC4/Yum”? That adds /etc/yum.repos.d/livna.repo as a yum source.

Also have a look at yumex (yum install yumex) It's a graphical frontend for yum and will give you a complet listing of available installed and updateable packages + package info and a very easy way to enable/disable repos.