Last summer I broke a spoke when my chain popped off between the freewheel and spokes. When I pulled the chain free it took the spoke with it. I also ride a trek soho s. I went to my lbs and a guy there helped me figure out the right spoke length. I bought a spoke, nipple, and spoke wrench for like 10 bucks. It took about an hour to replace and true. That's from tire off to tire on. It was actually pretty fun. Just use your brake pads as a reference. I'm pretty sure my wheel needed trued anyway. My wheel is still just fine, and I gained valuable knowledge about truing a wheel, and I think when I get an internally geared hub, I'm going to build it myself, (using sheldon brown's informational page as a reference of course).