The interface looks very simple. Easy to see volume controls and so forth. But it doesn't explain how to set up to mix two sound clips together. Do you use the top boxes or the bottom boxes???? who knows? I've tried it all and still no recording plays back. And windows media player does play mp3....but I get no sound. checked vol control, still no sound. Just a few simple instructions included with the download would have been very helpful. I'm sure it would be great...but I'm still empty handed and I only have two very small projects to do. And with only 7 days trial who can wait for support team to get back to you. I lost two days of trial in the first hour by just clicking it off and on again. So let's not assume the general population just KNOWS how to set it up to mix.