Amazon has great deals on digital downloads. You can get an album of 100 songs for 99 cents. I got an album of over 300 baroque songs for 99 cents. Good quality, too. Names like 100 Must Have Austrian Classics, 100 Gentlemen Classics, 100 Tea Time Classics, etc. I got about 2500 songs for about 15 bucks.
Here are 2 of my all-time favorites.
On the Beautiful Blue Danube – Strauss
The Carnival of the Animals – The Swan