What does this mean?!?

That sounds like an elvish language, or a drunken Finn, who´d sound like that after certain amount of alcohol.

Use GOOGLE or whatever to translate odd sentences from your Harry Potter DVD.
 
Oh well I thought it sounded kinda like finnish. Never mind, thanx I'll google it.

It means:

"A star shines on the hour of our meeting"

I knew I had seen it somewhere! It's taken from LOTR.