Some Urban Legends include playing Led Zeppelin's stairway to heaven backwards for demonic messages which IS true, some of The Beetle's songs backwards do the same, and even more as well. Ohio Players have a song with a scream of a woman being murdered by the band's manager right outside of their studio while recording, they kept it in the song as a sick tribute. She was a nude woman on the cover of the album with honey all over her, well that honey melted some of fiberglass and the glass hardened on her body, she peeled it off ripping her skin and ruiningher modeling carreer. She ran to the band (who was recording a song at the time) and manager complaining she was gonna sue them off the roof, that's when the manager got up and stabbed her to death. "Love RollerCoaster" is the name of the song, listen to it, this one is real.
More include one of the munchkins from wizard of the oz hanging himself on the set during a part of the movie and u can see it in the background woods if you look closely on one of the scenes.
There are many many others that i have learned maybe I'll post them another time or you can look up a bunch yourself.
You can also discuss about that in their forums. I love that site. 
The thing about urban legends is they don't become a legend unless people keep sending them around. Everytime someone sends me a warning email I look up the email on snoops and other sites that deal with urban legends. 9 times out of 10 I will find that email or one with the words slightly changed on that site saying its just untrue.
