rammpeth said:Man kann sehen, die In Flames sehr toll ist! -> is that well written
did you mean something like:
you can see (it could be seen) that it to looks good for In Flames?
If yes than --> man kann sehen, dass es für In Flames gut aussieht.

or did you mean:
you can see (it could be seen) that In Flames is very good?
If yes than --> man kann sehen, dass In Flames sehr gut/toll sind.