You can make your audio louder in Audacity by utilizing the Amplify and Normalize effects. Amplify increases the audio's level by a certain amount, and preserves the relative difference in level ...

Have you ever wondered why commercials sound louder than your favorite TV shows? Or why you have to adjust the playback volume on your television when switching between channels? Because of this, ...

Or you could just click the little box that says "adjust volume of audio channels" under the audio>volume menu and then adjust the slider. Set video to "direct stream copy" and set audio to "full ...