Honestly this is one of the biggest letdowns in online gaming history, in my opinion. The lag makes it unplayable. I know I could just download it, but I want to get the badges. I'll vote 3 for the fact you can download it; if you couldn't it would get a 1.
Bluish, I had this problem too. I'm assuming you mean when you click on "open file", your saved songs arent there. All you need to do is type the name of the song when loading it and it should show up on a dropdown bar. Click it, and it will be ok.
 "How to Raise a Dragon"){kind=icon}
 "Ultimate Crab Battle"){kind=icon}
 "Parachute Retrospect"){kind=icon}
 "Kongregate Badges Game"){kind=icon}
 "Notessimo"){kind=icon}
 "Super Crazy Guitar Maniac Deluxe 3"){kind=icon}
 "Platform Racing 2"){kind=icon}
 "Scribble!"){kind=icon}