[Kerygma99]

Pardon my ignorance with regard to multimedia, but I'm trying to do a project and I don't where to start. I have some recorded, voice interview material in .mp3 and .aiff file formats, and I want to add sound effects and fade some background music in and out of them at various points. Can someone tell me how I can do this? What program should I use? Any advice or tips?

[Chuck_star]

You have a few options. My favorite software for multitrack sound editing is Soundedit 16 my Macromedia($300). An excellent program for what you are doing. Your free option would be to download ProTools free from www.digidesign.com. This program is also excellent but limited to 8 tracks. Which should also be good for what you are doing. Both programs are a little complex and may take some learning time. Great stuff to know though.
Good luck!