hi guys, im try to update my centova but i get this error on console

Executing(--clean): /bin/sh -e /var/tmp/rpm-tmp.puHlgw
+ umask 022
+ cd /root/rpmbuild/BUILD
+ rm -rf icecast-2.3.2
+ exit 0
Preparing...                ########################################### [100%]
        package icecast-2.3.3-1.el6.rf.x86_64 (which is newer than icecast-2.3.2-0.x86_64) is already installed
Could not install RPM built from source; check your rpmbuild configuration
Installer exited with error, aborting


How can i fix it?

thanks

another error
gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Error is not recoverable: exiting now
Sorry, an error occurred while unpacking ShoutCast DNAS.
Installer exited with error, aborting