The Sound Engineer Training Suite is a Audio & Multimedia software developed by RF Media. After our trial and test, the software was found to be official, secure and free. Here is the official description for The Sound Engineer Training Suite: Training software bundle for beginning sound engineers including the Award-Winning programs Understanding the Audio Mixer and The Sound Check Trainer. Also includes a mixing tips chapter. Great for all church and band sound engineers or for anyone wishing to easily learn the basics of pro audio live sound. Interactive training so you can learn at your own pace. you can download The Sound Engineer Training Suite free now.