Can't get repos working

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Hello everybody.
I'm having some issues with yum. When I run "yum repolist" I get this:

[root@SRVRG3ORAPP01 ~]# yum repolist
Loaded plugins: product-id, refresh-packagekit, rhnplugin, security, subscription-manager
Updating certificate-based repositories.
Este sistema no está registrado con RHN.
El soporte de RHN Satellite o RHN Classic será desactivado.
file:///media/Server/repodata/repomd.xml: [Errno 14] Could not open/read file:///media/Server/repodata/repomd.xml
Trying other mirror.
repo id                                                                           repo name                                                                                                 status
dvd                                                                               Red Hat Enterprise Linux Installation DVD                                                                 0
rhel-6-server-rpms                                                                Red Hat Enterprise Linux 6 Server (RPMs)                                                                  0
repolist: 0

I have already registered and subscribed box to my account, and I've checked in portal and UUID is correct.
Can anyone help me with this issue?

Thanks!

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