Music for rainy afternoons: Blueboy, Joined-Up Writing. (It works equally well in Melbourne and London)
Music for walking through Exhibition Gardens at dusk: Debbie Wiseman's score to Wilde. (In fact, it would probably work just as well in any elaborately Victorian surroundings.)
The nifty thing about high-capacity MP3 players is that you can carry the soundtrack to your life in your pocket.