[PlanetCCRMA] error...

[Preston Callison]

When I run this command:
yum install planetccrma-core

I get this error:
[root@dhcppc0 pluginconf.d]# yum install planetccrma-core
Setting up Install Process
Parsing package install arguments
http://ccrma.stanford.edu/planetccrma/mirror/fedora/linux/extras/7/i386/repodata/repomd.xml:
[Errno 14] HTTP Error 404: Date: Sun, 05 Aug 2007 16:08:51 GMT
Server: Apache/2.0.40 (Red Hat Linux)
Vary: accept-language
Accept-Ranges: bytes
Connection: close
Transfer-Encoding: chunked
Content-Type: text/html; charset=ISO-8859-1

Trying other mirror.
Error: Cannot open/read repomd.xml file for repository: planetextras
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Any ideas on how to fix this?

Also, is this a Real Time Kernel?