Sometimes, when you wish to use some audio files as background music for your videos, slideshows, or presentations, the audio track might turn out to be shorter than the video. In such a case, merging two or more audio tracks into a single one can save you time from switching the audio tracks manually. You can merge audio files both online (with the help of web-based services) and offline (using software installed on your PC). In this article, we provide you with step-by-step instructions on how to merge audio for free both online and offline.
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