Aspies For Freedom

I recently watched a video on subliminal messages in music. I personally cannot say for myself if these are true. I want your opinion on this subject. Thes links are the videos i looked

at.http://www.youtube.com/watch?v=Yv1BiRkZ_Tghttp:
//www.youtube.com/watch?v=OR2plbj7Giohttp:
//www.youtube.com/watch?v=wbn4Qmfjmjk&feature=related

The last video is certainly intentional, recoreded gibberish, backwards some message. In case of Stairway to Heaven, I'm undecided. The alleged satanic part is, if played forwards, clearly bordered from the rest of the song... Led Zeppelin themselves never said if there was a message there or not, they just said something like "Everebody can hear that what they want to hear".