For cinelerra do this
At the terminal tape as root:
1- rpm --import
http://ATrpms.net/RPM-GPG-KEY.atrpms
2- gedit /etc/yum.conf
At the end of the file add:
[atrpms]
name=Fedora Core $releasever - $basearch - ATrpms
baseurl=http://dl.atrpms.net/f$releasever-$basearch/atrpms/stable
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
gpgcheck=1
3- At the terminal again tape:
yum update
4- yum install cinelerra
After you finished installing cinelerra disable the atrpms.nt in your repos