2000 Ford Focus transmission problems or clutch problems

Previous to my breakdown I was having trouble getting it into gear and a bit of gear grinding but I just chocked it up to the cold. Last night I was driving in 5th gear and all of a sudden the engine rev'd really high even though it did not pop out of gear. I put it in neutral and tried putting it in a lower gear with no luck. I wasn't able to get the transmission into any gear. If I let out on the clutch even when in neutral the engine stalled. There was a burning smell when I exited the car. There was no more driving it.