Thanks Buddha!
I don't believe journeying with icaros could be dangerous, just not effective through recorded means. Yes a layperson might not know the intention and meaning behind the song, but I doubt there is any harm that could be done by listening to the wrong song at the wrong time. That and there is a thread regarding recorded icaros being unable to achieve the same effect in the recorded medium, something to do with the vibrations and living voice but I'm probably not doing it justice. I think its a good way to learn the songs, and if you know a bit of Spanish you can start to pick up the meanings of the songs and if you know Shipibo even better. I acquired a small booklet with some Shipibo vocabulary in healing songs from a friend and it has helped immensely. I'm know shaman, and never will be, but I love finding resources on the topic.