Hello Grannie Annie...
Yes I often use The paraliminals.. in the background.. I have found that if I use, the paraliminnal.. through head phones, first.. Then I have a better result.. Then just having them play in the background. it’s like some anything you list to if you hear it enough times, you can learn it automatically.. just like a song.. yet Listening to Paul.. is something that I find really cool.. as he as one of the best voices.. have having all them positive messages.. can only do us good.. so I think it's a good thing to do from time to time..
oops as for results.. I would stick to listening through headphones.. as you get a much better learning session..
Over the years.. I have been playing with Paraliminals.. and it could take up to fore times longer.. to reach the same goal.. just by listening to them in the background..
Yet that shows that they still work.. with or with out headphones...
hope that was useful..