Which player should i use to play blu-rays on my computer?

[Hama]

I don't have power DVD. Nor do i want to shell out 50$ for it.
Is there a player who can play blu-rays with a minimum of tweaking?
And i mean actual blu-rays not mkv files.

[Laithoron]

Assuming you already have a bluray drive, it looks like there is a Bluray plugin for VLC:

libbluray

[Hama]

That worked. Thanks.