Ford Mustang

I have a 2004 ford mustang v6 (manual trans.). I bought this car in january of 2007. Soon after I bought the car I realized that something was wrong. Everytime I would shift into fifth gear it would scrub really bad, sometimes I would have to back out and shift back in just to get it to go into gear. Yesterday I had the same problem but when I backed out to go back in I heard a loud pop (what sounded like a cable breaking, followed by what sounded like a cable recoiling) then I was unable to get it to go in any gear. Could it be the clutch cable or something else?
Mustang Shellie
May 8, 2007.

Where is the clutch pedal? To the floor. Or OK?

May 8, 2007.