But I have read in the bible that the prophets feel into trances and that they sometimes used music to this effect. I do know however that certain tribal recordings you can buy of shamanic music are designed to call spirits-kind of like how our worship songs are designed to call Gods Spirit to us.
But my understanding of binural beats is that they can put you in trances and yes, if you want to then use that state to ask tree spirits advice then you deserve everything you get. But if you use the trance to meet with God then I feel that its OK since they did this in the bible.
Its all about who you are seeking.