[etc]

var str:String = "Woke up and I feel like shit I don't remember last night, I'm getting sick of this I hit the bottle when I got off stage And got piss drunk stupid and went in a rage I think I mighta got into a fight Because my knuckles were bloody and I don't feel alright I hit the bottom and I don't even care Some say I'm going to hell but I'm already there Sick and tired of being sick and tired";
var r:RegExp = /(.{20})/g;
str = str.replace(r, '$1\n');
trace(str);