While browsing recently (completely unrelated to WMM) a website I came across has a forum on relaxation and meditation, and offers links to several commercial audios with hypnotic potential. It's largely self-help related, but the interesting ones include claims of reaching states of super-deep meditation, breathing exercises, actual hypnotherapy sessions and audio tracks with binaural beats in the alpha, theta and delta ranges.
I'd like to share them with people here, either by naming the website or posting direct links to those files, but since it's commercial audio I'm not clear on the legality of the whole thing. (You're not paying for them, they're ripped MP3 audio.) I didn't see anything about it in the TOS, but I thought it best to check first.