I would like to know how much can I integrate my app with Soundcloud. What I would like to do is integrate and sync with specific users who already have a soundcloud account so that users can access their music from my phonegap app. Is this possible along with the ability to search through their list of sounds to ensure there are no duplicates?
Lastly can someone direct me to where I can find the copyright issues with selling music that are stored on Souncloud
Soundcloud has javascript API. That should get you started with soundcloud and cordova http://developers.soundcloud.com/docs/api/guide
Legal notices and copyright notices are in soundcloud's main menu. Did you see them!! https://soundcloud.com/terms-of-use