AddAudio is a free iPhone application that allows users to easily mix video with multiple audio or music files. Unlike other solutions, this app allows users to add as many audios as they want, making it incredibly versatile. With AddAudio, users can customize the volume and position of each audio file, as well as enable or disable specific audios.

To use the application, simply select a video from your gallery. The app will display your video along with options to enable/disable the audio from the original video file, control the volume of the original audio, and add more audios to the video. Clicking the "addaudio" button opens your music library, where you can select the audio you want to add. The app then adds the new audio file to the video, allowing you to adjust its volume, starting position, and enable/disable it. Repeat this process to add all the audios you want.

To preview your final output, click the play button on the red toolbar. Once you're satisfied with the result, click the done button to generate the final video.

AddAudio is a powerful tool for anyone looking to enhance their videos with additional audio or music. Whether you want to mute the original audio, adjust the volume, or add background music, this app provides a user-friendly and customizable solution.