Lol, the guy is an entrepreneur, a real estate mogul, a skyscraper dealer, a Twitter addict, a persuasive manipulator, and now the president of the United States of America.
He doesn't have serious time to audiophilia music listening; from where he stands (always on the move) it just don't matter if he has a Boulder or Technics sound system.
Did you read his book; 'The Art of the Deal'? ..His next one; 'The Art of the President'. :b
I have never explored Donald's taste of music and films; I have no clue, but I assume he has a great penthouse home theater above New York's skyline.
Is he into Jazz from the 50s, is he into Classical music, is he more into Classic Rock; I just don't know because I never checked.
Just a guess; I bet he likes Opera music, like me. But maybe not, I should ask him on his Twitter home page ...