how do i know whats showing up in peoples news feed?

[U-nVr-No]

so, i thought i had all my privacy settings good, but maybe i didnt?

im kind of worried because i do not want every singe comment, all the music, my youtube videos, i don't want that to show up...so like when it says "this person is listening to ____ on pandora" or "this person commented blah blah blah" ...not that i really have that much to hide, but it would be pretty embarrassing if i was flirting with someone and then 100 some people on my facebook see....or maybe i don't want everyone to know everytime i listen to salsa music lol i checked my settings, and most of them are pretty strict, but when then for some reason, my comments and activity are still "friends only" ....i asked some of my friends but they said "im not sure" ....they might not want to embarrass me lol especially is they see flirting back and forth ect
im just saying because other wise, nobody would have any reason to go snooping around my facebook, i just don't want my activity to be publicly announced on everyones news feed.
lol so, i can't use youtube or pandora with out everyone on facebook knowing everything im doing?