Game companies, such as EA, usually have a blanket statement that says you can use their game footage (including audio) for monetization however you please. If you're gaming, you should be fine.
I would stay away from using any copyrighted music. If you need music consistently, get some type of royalty free music service. It might be pricy, but it's worth it if you're investing in your business. That way you can have unique audio, and also not have to worry about content claims. I use AudioBlocks.com and really like it. They had a special that was $99 for a year subscription. In my books, that easily pays for itself if you put it to good use.