In Adobe Premiere Pro, you can edit audio, add effects to it, and mix as many tracks of audio in a sequence as your computer system can handle. Tracks can contain mono or 5.1 surround channels. In addition, there are standard tracks and adaptive tracks. Choose Edit > Preferences > Audio Hardware (Windows) or Preferences > Audio Hardware (macOS). From the Device Class menu, choose the driver for the sound card you want to use. Choose a Default Input and Output from the card. See Assign audio inputs and outputs to tracks in Adobe Audition Help. Windows. Use the Control Panel to check your default audio device and its volume setting. macOS. Open an Adobe Premiere Pro project that contains audio clips, video clips with audio, or a Bars and Tone clip. Choose Premiere Pro > Preferences > Audio Hardware. Choose an audio device: To launch the Essential Sound panel, choose Window > Essential Sound . Unify loudness in your audio. In the Essential Sound panel, select the clip type as Dialogue, Music, SFX, or Ambience. To make the loudness level uniform throughout the clip, expand Unify Loudness and click Auto Match. If you've recorded scratch audio on your video track, Premiere Pro makes the syncing process incredibly straightforward. Here's the first way you can sync audio and video in Premiere Pro. Step 1: Select Both Tracks. Highlight both the source video track and the external audio track. Step 2: Right Click and Sync CaJP.