Welcome to the forum!
If your son cannot sit still for ten minutes at a time, then listening to Lifeflow will not help. Entrainment takes at least 8 minutes for beginners.
I'm not sure I would let my child use entrainment when first starting to learn to meditate - but others may have more experience than me. Letting him listen to the track for a very few minutes would satisfy his curiosity and do no harm.
Encouraging him to meditate is great and if he would like something to listen to there are plenty of cd's with water sounds, forest sounds, calming music etc.
I would start with a few minutes only, just observing his breath with his eyes closed. Liken it to someone standing at a gate checking off everyone coming in or out - he watches his breath coming in and out, trying not to miss one. It's fine if he does, remind him if he gets into thinking or daydreaming to go back to the breath as soon as he realises. 5 minutes is enough for the first session. Add 1 minute per session till you reach 10 and keep it at that for a while.
To make it more special - get him a special cushion to sit on and something like a shawl to put round himself and try to make it at the same time each day.
Discuss his experience with him and share yours at the end of the session.
Have fun together and keep us posted on how you are both doing.
peace and joy
