So recently I took my network down in my house and connected my computer directly to my cable modem. I still have all my itunes sharing preferences turned on from my home network. Last night I had about 5 sources pop up in my shared music list. None of it belongs to me and I think it may be people on my ISPs network, like down the street. Has this happened to anyone? Also, is there an app. to sniff out networks so I can see who else is around my computer?