Well, I replaced the flush valve and the leak problem is fixed.
I still have a dripping sound though. After the commode is flushed, you can hear the water running out of the drain very well. It's just like I'm standing there pouring water straight down an open pipe. The commode completes filling and the water shuts off then it makes loud dripping sounds like the water is equaling out between the tank and bowl or something. Then after about a minute it all stops. Again, there is no visible water anywhere and no sewer smell. Also, I can turn the water off for an extended time an no water leaks from the tank.
These sounds were definitely not there before and are not coming from any other commodes in the house. Any ideas or am I being to paranoid about this?