Translation, the longer version:
"Here they are; (names)."
"I've never been in a stadion, right. First time, immediately singing, it's nice. Just put us in front of an audience"
"I'll just do it. Piece of cake"
"I think it's scary"
"Piece of cake?"
"We're professionals (?), so we'll just do it"
"It's 40,000 people"
"It makes me nervous"
"Just like getting your driver's license"
"I got karnemelk (what the fuck is Karnemelk in English? Ah, some type of milk) from Paul de Leeuw, so they dissapeared nicely because of that" (might be referring to his zits, in any case this remark proves its a spoof)
"The artistic leadership is in the hands of sing-coach, Joos"
"The idea is that we all sing a line and the refrain we all sing together"
*bad singing*
"Ok guys, do you think this'll work? Or look at me and tell me this won't work"
"No I can't do it, I only know the second line"
"Then you're number 2"
"And then we know the formation. From Idols-dot to middle-dot. Here are our heroes from Idols II!"
And that should be it
Say what you want, at least we have the self-critique to spoof Idols.