Getting to Salzburg, Salzburg
You could go by local Postbuses (part of Oebb) from Salzburg to Lofer then St.Johann and Kitzbuehel for a scenic route. An other possibility would be Salzburg to Bad Ischl and Hallstatt.
We used the train to travel from Budapest to Salzburg and it was a most enjoyable yourney. The landscapes that you see along the way is stunning