[linux-audio-user] Planet CCRMA and apt-get

Hello, I have just intalled Fedora Core II, and was trying to use apt-get to install ardour from Planet CCRMA. Some of the packages will not insall, complaining about missing keys. Anybody know what is happening here? Thanks, Tobiah Reading Package Lists... Done Building Dependency Tree... Done The following extra packages will be installed: liblrdf (0.3.7-1.rhfc1.ccrma) libsamplerate (0.1.0-2.rhfc1.ccrma) libsndfile (1.0.9-1.rhfc1.ccrma) raptor (1.0.0-1.rhfc1.ccrma) The following NEW packages will be installed: ardour (0.9beta11.2-1.rhfc1.ccrma) liblrdf (0.3.7-1.rhfc1.ccrma) libsamplerate (0.1.0-2.rhfc1.ccrma) libsndfile (1.0.9-1.rhfc1.ccrma) raptor (1.0.0-1.rhfc1.ccrma) 0 upgraded, 5 newly installed, 0 removed and 12 not upgraded. Need to get 0B/4687kB of archives. After unpacking 13.2MB of additional disk space will be used. Checking GPG signatures...Y/n] Unsigned /var/cache/apt/archives/raptor_1.0.0-1.rhfc1.ccrma_i386.rpm: sha1 md5 OK Unknown signature /var/cache/apt/archives/liblrdf_0.3.7-1.rhfc1.ccrma_i386.rpm: (SHA1) DSA sha1 md5 (GPG) NOT OK (MISSING KEYS: GPG#68d9802a) Unknown signature /var/cache/apt/archives/libsndfile_1.0.9-1.rhfc1.ccrma_i386.rpm: (SHA1) DSA sha1 md5 (GPG) NOT OK (MISSING KEYS: GPG#68d9802a) Unknown signature /var/cache/apt/archives/libsamplerate_0.1.0-2.rhfc1.ccrma_i386.rpm: (SHA1) DSA sha1 md5 (GPG) NOT OK (MISSING KEYS: GPG#68d9802a) Unsigned /var/cache/apt/archives/ardour_0.9beta11.2-1.rhfc1.ccrma_i386.rpm: sha1 md5 OK E: Error(s) while checking package signatures: 2 unsigned package(s) 3 package(s) with unknown signatures 0 package(s) with illegal/corrupted signatures