I like Power Music formerly Power Productions). Have used their products since the 90s. You can buy individual songs and create your own play list, you can fiddle with the speed, they have things nicely organized by category, you own the music outright, and they often have things on sale, and it is a tax write off. And you can put it on your ipod.
Original songs are great, but the beats are not always perfect, and there is the whole ASCAP, BMI thing which hits more if you want to use original artists, rather than buying the premix.
True you still spend money for the music, but after all, the people who make it want to make a living for their work just as much as do I.