iPod just charges when connected to PC

I suspect it's because of the moisture it gets when I put it in my pocket. The screen doesn't dim, though (others with water damage say their screen dims and sometimes go blank)

The only thing I can't do is to transfer files. Whenever I connect it to my PC, it charges, but iTunes nor Windows recognizes it. When I connect it to my iPod dock however, it can play the music files perfectly thus suggesting the idea that the cable or my PC has a problem, but no and no. The cable and the PC works perfectly with other iPods.

I tried leaving it overnight buried in uncooked rice but it didn't do anything. :/