I recently discovered that when my husband is absent, I listen to entirely different music than when he's here. Although we share certain musical tastes, we diverge just as often.
He's more likely to play Philip Glass, Puccini or Bach and I'm more likely to play Emmy Lou Harris, the Wainwrights, Shelby Lynne or Lucinda Williams.
Or, even more pointedly, I often listen to NPR whereas he's more likely to put on Chris Matthews. I like my news muted; he likes a more bombastic approach.
What do you listen to when there's nobody there to object? Or does your housemate share your preferences completely?