Purchase of this asset allows you to use any part of any track in any commercial production of yours.   Please Note This is Three 20 plus minute tracks and Will need to be cut for ideal use.   Royalty Free Use For All Commercial Projects online and offline.   You can easily edit and convert mp3 files to wav or aif with   a software called audacity for free   https://www.audacityteam.org/   There are free versions for linux, Macintosh and all windows 32 or 64 bit versions. It offers the ability to cut, fade in or out and a collection of cool effects for any audio file!   Older version of audacity can be found here: http://audacitydownloadguide.com/older-versions/