Royalty free music is one of the safest kinds of music you can use on your website. The other option would be a track that you've written and performed yourself.
Almost all modern music is copyright. Which means that if you want to use it on your website, you will have to come to an arrangement with the owner of that copyright in order to use it. Either that or be prepared for a "cease and desist" letter from their lawyer along with a demand for unpaid royalties. Not the nicest thing to have happen to you.
It's a common misconception that if something is available on the internet, it's OK to use it on your website. That's not true - everything published is automatically copyright unless the author specifically says otherwise - this happens nowadays mainly with open source software and even then there's usually some kind of agreement (often called copyleft).
The safest kind of sounds to use on your website or on your YouTube video is called "royalty free" or sometimes "stock" or "buyout" music.
The author takes a one-off fee in return for you being able to use their work pretty much anywhere you see fit. Although there's usually a restriction to stop you selling it unaltered - you normally have to modify it in some way.
Once you've bought a track or CD in this manner, you can add it to your website and still be able to sleep at night. You can also use it to add variety to your YouTube videos, or in an amateur dramatic production, your own movie, CDs and DVDs you produce, and anything else you can think of.
There are all sorts of different tracks available from new age through to R'n'B, Hip Hop, jazz, country and any other musical genre you care to name. So you're bound to be able to get hold of something that fits the mood you want to recreate.
Learn more about using royalty free music, what's available and where you cam purchase royalty free music for immediate download.
Source: www.articlecity.com