i listen to comedy and all sorts when im sleeping - you get used to it
i did also try some subliminals and some open 'hypnosis' ones.
the subliminals where nature sounds or music - but i found the music annoying
i also found the voice of the guy that did some of the others annoying
really stupid petty thing, but it made me 'notice' every time - which i couldn't help and defeats the purpose
it was simply that his very first word was 'welcome' but his accent made pronounce it oddly - sort of 'ULcome' ...