Q&A: Making a Musical Video What do I need to add my own music to the background of a video clip I shot on my phone? One way to mix in audio is to pull the clip into a video-editing program, add the music where you want it and then export the newly enhanced version as a new video. The program and device you use for that purpose is up to you. If you want to do your editing on a mobile device, search your app store for video-editing programs designed to work on your phone or tablet. When you select an app, check its help guide or developer's Web site for instructions on adding music to a video clip if the steps are not obvious. In most cases, you need to have the audio file you want to use on the mobile device; some copy-protected tracks may not work properly. For those new to movie making, using a video-editing program designed to work on a regular computer may be easier. You need to import the video clip from the phone to the computer (transferring it by e-mail, online server or USB cable connection are common methods) and have the audio track you want to use there, too. Many third-party video-editing programs are available, but for simple editing chores, you do not need to spend money on software. Most Macs come with Apple's iMovie application and Windows users can download the free Windows Movie Maker program if it is not already installed on the PC. Google's free Picasa software for Windows and Mac OS X can also add audio tracks to movie clips, as explained here.