A decade ago if a client wanted a simple effect like revolving a title it had to be done in an editing studio at a cost of $5000 or more. Today such an effect costs $0 since the effects are included in desktop editing software programs (Avid, Final Cut Pro, Sony Vegas), and as simple as clicking a mouse.
In the past the only way to add music to a movie was to hire an orchestra, and then along came synthesizers, but today software programs like Sony's Cinescore automatically generates fully composed production movie soundtracks for movies. A just released software program, Music Mastermind, even lets you hum a tune and turns it into full-blown professional sounding song. Several companies offer excellent royalty-free music. Music can now be added to Independent movies for hundreds of dollars rather than hundreds of thousands of dollars - or even millions of dollars (see the music budget for Spider Man below).