Hello,
I made test Fedora 10 repository for Kdenlive (32 and 64-bits packets + sources):
So, be free to try&test them.
Instructions for setting up repository :
First of all users must have installed RPM Fusion repository:
su -c 'rpm -Uvh http://download1.rpmfusion.
then type this:
su -c 'rpm -ivh http://wiki.open.hr/~zpintar/fedora10/zpintar-repo-1.0-1.fc10.noarch.rpm'
su -c 'yum update'
su -c 'yum install kdenlive'
It contains the latest subversions of Kdenlive and MLT programs.

Hello...
Ad first, you can not build RPMs by the KBW. You must use configure/make/ make install routine under the RPM's .spec file.
So, I suggest to you that be patient for a while because, maybe I'll try to distribute real RPM's (no prereleases) to Fedora community.
Now I just studying Fedora's Packages Guidelines and when finish I will make RPM's for 32 and 64-bit environment.