You are considering creating a soundscape with the locosonic editor? Great! Here are some useful tips for you:
Your soundscape will probably hold some environmental sounds and you are wondering where to get them. The solution is easy: Freesound!
“Freesound aims to create a huge collaborative database of audio snippets, samples, recordings, bleeps, … released under Creative Commons licenses that allow their reuse.”
Just take a look at http://freesound.org
If you look for free music you should consider using the Free Music Archive.
“The Free Music Archive is an interactive library of high-quality, legal audio downloads directed by WFMU, the most renowned freeform radio station in America. Radio has always offered the public free access to new music. The Free Music Archive is a continuation of that purpose, designed for the age of the internet. It was launched in 2009. ”
Check it out at http://freemusicarchive.org/
Another platform to be mentioned is, of course, soundcloud. They have a section of sounds released under the creative commons licence: