WPKN 89.5 FM (WPKM 88.7FM in Montauk) - And not just because they let Caroline Doctorow and I do the The Songtrails Radio Hour there. It's because WPKN is true Freeform Radio - tune in, and turn on your mind. http://www.wpkn.org
WLIU 88.3 FM - A new day dawns for this gutsy survivor and supporter of local arts. Invaluable community player - Many folks can't start their day without listening. Essential. http://www.wliu.org
WEHM 96.9 and 92.9 FM - A commercial radio station playing great music, not owned by some big conglomerate, with engaging, super-cool (and funny) on-air staffers who not only are out there, interacting with listeners, and supporting local music, but they also have sandwiches named in their honor. Travel to other US markets and realize: We're lucky to have http://www.wehm.com as "one of us".
NORTH FORK SOUND RADIO - Rock and Roll as only Howard Thompson can do it. Connected, informative, opinionated, totally supportive of the local music scene, and a font of information. A pint with Howard is worth two pints in the bush. I'd say there are many imitators... but there aren't. Streaming on the internet: http://northforksound.blogspot.com