Are you looking for a Free and Legal Music for your youtube video, game, film, presentation, slideshow or website , If yes then Dan-O will help you he is allowing all his visitors to download his music files from his website DanoSongs.com.They ask for credit if you use for free. $10 US per mp3 track without credit .
You can also use Youtube Audio for your Video Project you can get all those for free from youtube. Youtube provide you with an Option to download thousand of free music .
To Access that all you need is to Visit your Youtube Channel and Move to Audio Library from there you can listen and download any music.
Use Creative Commons Music For Youtube Videos
You can also use Creative Commons music by providing credit of the creator of that Music.
Buy Cheap Music Rights For Youtube Videos
There are lot more website but you need to Pay-Per-Use ,istockphoto.com also offering music rights from $3.60 to $95 depending on the license selected and type of payment plan you choose.So i will not suggest to go with those option.