JewelBeat　1曲 $ 0.99。
http://www.jewelbeat.com/store/downloadhome.php

気になるライセンス

http://www.jewelbeat.com/static/license.php

(B) RIGHT GRANTED
1. The Music may be used, edited, and/or incorporated according to the guidelines described herein into any production including, but not limited to, television, radio, film, video, software, physical products, telephone on-hold, video games, websites, podcasts, events & tradeshows, audio books and online videos.

カテゴリーはこんな感じ

Blues / Children / Classical / Comedy / Corporate / Country / Dramatic / Electronic / Hip Hop & Urban / Jazz / March / Minimal / Motivation / Orchestral / Others / Pop / Religious / Rock / Seasonal / Vocal / Well Known / World