This might be old news by now, but I'm new and was wondering if anyone had ever modded their cable so that it had an in-line remote and mic for iPod and iPhone?

So I work at a law firm doing a job where I walk around at least 3 hours a day delivering things. I listen to music on my iPhone so I don't miss any calls I may get from work. I was using the crappy stock earbuds, then upgraded to some crappy Sony jobs that had the in-line remote, mic, and...