Alright I have just ordered a new red 4gb nano to replace my slightly aging 10gb 2nd generation ipod and I have a couple of questions. I need a good hard case that will protect the nano when I throw in my backpack, I really would only like the headphone jack to be open, and the case to be easy to open, so when I get to the computer lab I can just pop it off. I looked at agent18's NanoShield Cover and it looks like it might fit the bill, but I was hoping that someone could give me his/hers experience. Now for my second question. I am looking for a good set of headphones for runnning and working out. I have been looking at the Sennheiser PMX 70, again I was hoping someone hear could give me there feedback on using them for working out. Thanks ahead of time.