Well this is my 1st entry here, I was talking to some older (50's) friends of mine (I am 35), in addition to talking about band we like or don't, we got to the topic of well like them or not where do you hear new music.
It likely isnt FM radio. Even new music by old artists, sure Neil Young gets plenty of air time, but I doubt you will hear anything off an album released after 1980, unless maybe it was released that week. I have bought just about every new Neil since Freedom new off the shelf, I remember Rockin in the Freeworld on the radio, and thats it. While traveling a station in Maryland played something off of Silver and Gold, and during the whole 9/11 bru-ha "Let's Roll" got a second of air time. Thats it. It's too bad, Greendale is great, and CSNY's Looking Forward is largely overlooked, in part because unless you just bought it you never heard it.
Grace Potter, I "found" from reading this website and relix.
Tea Leaf Green, I found (this isn't a joke) one night on archive, and drunk, while looking at the page that lists all the bands, and just tossed my mouse around until I found a band name that sounded cool. I meet Josh after a show and told him that, he got a really good laugh at my expense. Friends of mine got in to TLG because I wouldn't shut up about them.
Umprey's I was "dragged" to see them by friends wow'ed at Bonaroo.
The sampler disk in relix is how I hear new song.
My friends raved about early FM radio, being a playground of new music, little commercials. If the DJ liked it he/she played it. I was told about being about to hear Yes's Close to the Edge on the radio, an 18 minute track on radio..Now you're lucky to get Owner of a Lonely Heart
There is one station in my area that tries, to play new stuff, odd stuff, there program manager is a little to pop / singer songwritter based for my taste (KT Tunstall isn't my bag) but they try.