Not sure if what I did is good, bad, or indifferent, but I wanted to have access to the Fedora Extras at freshrpms.net and be able to install programs like synaptic and all from apt. Maybe I am too impatient or lazy or whatever.
I did an "apt-get update && apt-get upgrade -y" with the version of apt from Dag's repository which I had been working with since installing FC4.
Then I added the line:
rpm
http://ayo.freshrpms.net fedora/linux/4/i386 extras
to the freasrpms.list file in my sources.list.d directory then did another apt-get update and upgrade. I noticed that it installed a newer version of apt and that it was hitting the freshrpms extras repository. The bad news is that it messed with my sources.list.d and made *.rpmsave files out of my *.list files there. But it also created a sources.list file in /etc/apt that only had the freshrpms extras listed. That made extras my only repository, not the intended result. But I added this:
rpm
http://ayo.freshrpms.net fedora/linux/4/i386 freshrpms
line and I now have access to updates and extras.
I still have to add the other repositories I lost, but can do that easily enough and I will then have access to updates and extras. I was able to install synaptic easily with the "apt-get install synaptic" command and got all the SDL libraries I needed the same way.
I'm sure that Voidmain will post if this is not a proper way to do things, but if you're impatient like I was and want access through apt to Fedora Extras now, at least this seems to be one way to do it.
HTH,
Jim DIshaw