So, all I need is a mic, to set up my iPod according to the stickied guide, and to have a wi-fi signal? And that lets me make free calls to anyone? Cell phones? Land lines? Are there any fees involved aside from buying the mic? Can people call me as well? When talking to someone, do I just hear them through my headphones? Last, where do I get a mic? Is there more than one kind out there?