repo problems with yum/yumex after upgrading fc4/fc5

["fb" <aikus freemail hu>]

 After upgrading from fc4 to fc5 (by a DVD) I cannot to 
find working repos for yum/yumex except livna repos. 

Can anyone tell me where can I find working basic repos: 
fedora-extras.repo, fedora-updates.repo, fedora-
core.repo, repos for mplayer and wine, etc?

Or/and suggest a better baseurl/mirrors url?

TIA:
Balint from Hungary

A few examples of recents: fedora-extras.repo 
baseurl=http://download.fedora.redhat.com/pub/fedora/lin
ux/extras/$releasever/$basearch/
gpgcheck=1
fedora-updates.repo
baseurl=http://download.fedora.redhat.com/pub/fedora/lin
ux/core/updates/$releasever/$basearch/