Do we have to pay for downloading music from your music library? Or is it part of the subscription?

Answer 1

Each track that you download from Voices.com is $0.99!

Royalty-Free Music Selection

Voices.com is proud to provide royalty-free voice-over music for clients and vocal artists alike. This voice-over background music spans a wide array of genres, with represented styles including acoustic, orchestral, blues, Celtic, teen pop and hip hop. Also represented is background music categorized by purpose, such as music that stimulates positive thinking, themes for newscasters and soundtrack music suited to extreme sport participants and spectators. All these are royalty-free and can easily be found in the vast Voices.com music collection.

http://www.voices.com/royalty-free-music