I need an audio editing program that will allow me to take multiple tracks and stack them on top of each other, so to speak. I need to create a single audio file out of four seperate files, but instead of playing them end to end, I need them all at once. Any suggestions? I'd like it to be freeware, or atleast have a trial with no restrictions because I'm probably not going to use it after this. Thanks.
Audacity http://audacity.sourceforge.net/ It works well for multiple audio tracks and a lot more. To add another track of audio, go to Project >Import Audio, once you're in the program.