Alien Speech? Found in NASA's Saturn Radio Signal

Speech patterns have been found in a radio signal released by NASA almost 3 years previously in 2004.

Judge for yourself what the voices are saying, it is a very bizarre anomaly but very much worth investigating.
Instructions:

1) Download and save the original WAV file from NASA/Cassini website:

http://saturn.jpl.nasa.gov/multimedia/images/saturn/audio/pia07967-072504.wav

2)Open an audio editor like Cool Edit or Sonar and raise the pitch/frequency of the file by 12 tones with the pitch shifter..

and there it is, speech patterns.

How can anyone explain this anomaly. Certainly NASA have no explanation for it after we presented the file to them for their opinion. SETI also dont know what make of it. What do you think?
SOURCE:

http://cassini.physics.uiowa.edu/space-audio/cassini/SKR2/