[CentOS] Forcing yum update

> I have tried launching yum shell and then remove libmodplug, install
> libmodplug while having made sure epel is available. This after having
> read that it is a bad idea to use no-deps with yum. My attempt,
> however, fails with a not found message.
> 
> What would the correct approach be?

The correct approach would be to use yum-plugin-priorities, set rpmforge 
priority to a higher value (lower priority) than epel and run yum 
distro-sync.