Music and audio is designed to change your state of mind I believe, but its not designed to make you stay still, nor induce a lucid dream from nothing. I'm not sure of the complications of ADHD in doing that. Though I know a few lucid dreamers who have it so it won't stop you.
A common mistake people make is going to bed and trying to WILD straight away. It doesn't matter if you manage to stay still, you are almost guaranteed to just fall asleep and not get lucid. You should try adn WILD after being asleep for at least 3 to 4 hours. I suggest you look into WBTB and DEILD, these are branches of WILD that most people use because their success rates are very high and they don't take long to induce. Its what I depend on.
"Staying still" doesn't literally mean locking up and not moving. Relax, get comfortable, and try not to move. If you need to itch or are getting very uncomfortable, then it is okay to move because the implications of getting tense and uncomfortable are worse than moving a little bit and getting back on track.
Try to focus on breathing if you need a distraction.
