NEW YORK (Reuters) - America's country music scene isn't exactly known for its gay artists, but a colorful pack of wanna-be stars pulled out their best rustic twangs and wailing guitars on Thursday to try to change all that.Scores of country music hopefuls auditioned in New York for what is being billed as a television show to pick an openly gay country music star from about 50 contestants.The musicians -- most of whom wore jeans and spit-polished boots -- wailed through Willie Nelson songs, crooned like Lyle Lovett and belted out ballads like Garth Brooks.Livening up the day was The...