Mises.org offers a free set of Rothbard’s micro lectures and a good deal of his other ones too. The site doesn’t, however, offer the same kind of structured macro course (that I know of). I’m wondering if either there might be a macro course of the same quality that Rothbard might give or if perhaps you might recommend a few of the lectures he gives that together would make an adequate composition for a macro course.
Roger Garrison is probably the foremost Austrian macroeconomist. I don’t know of a specifically designed course, but you might check his literature, media, and daily archives, as he’s got plenty of content there.
Also his personal website has tons of great content. The Time and Money lectures might be exactly what you’re looking for.