How to Merge Music Files: 4 Easy Ways on Windows, Mac, and Online

First, decide what “merge” means for your project. Most music mergers place files one after another to create one longer track. That is ideal for albums, audiobook chapters, voice recordings, and medleys. If you want two tracks to play at the same time, adjust volume independently, or add fades and crossfades, use a multitrack editor such as Audacity instead.

The files do not always need to share the same extension or audio settings. A converter-based merger can process common audio types and create one consistent output file. Choose the final format and quality according to the device, player, or editing app where you plan to use it.

Method 2: Merge Music Tracks in Audacity

Audacity is a free multitrack editor for Windows, macOS, and Linux. It is a better choice when you want to see waveforms, control the spacing between tracks, overlap clips, adjust individual track volume, or create fades.

Step 1. Open Audacity and select File > Import > Audio to add the music files. Each file appears on a separate track.

Step 2. To place the clips one after another, drag the Clip Handle at the top of each waveform.

Step 3. Play the project and refine the joins. Adjust the clip positions or apply Fade In, Fade Out, and crossfade effects where appropriate.

Step 4. Choose File > Export Audio, select the format and quality, and export the project as one mixed-down audio file.

Important: Current Audacity versions no longer use the old Time Shift Tool or F5 workflow. Clips are moved with their handles. Some audio types may require Audacity's optional FFmpeg library, and DRM-protected files cannot be opened.

Method 3: Combine Music with Foobar2000

Foobar2000 is useful when the files are already organized as a playlist and you want to convert them into one continuous output. It is less visual than Audacity but works well for straightforward album or chapter joining.

Step 1. Install Foobar2000 and drag the music files into a playlist.

Step 2. Arrange the tracks in the exact order you want, select them all, right-click, and choose Convert > ....

Step 3. Configure the output format and destination. In the destination settings, enable Merge all tracks into one output file.

Step 4. Return to the converter setup and click Convert. Some compressed outputs require the corresponding encoder to be installed or configured.

Method 4: Join Music Online

Audio Joiner by 123apps is convenient for a few small files when you do not want to install software. It lets you rearrange tracks, add a crossfade, and join them directly in a browser.

Step 1. Open Audio Joiner and click Add tracks to upload your files.

Step 2. Drag the tracks into the correct order and enable crossfade when you want a smoother transition between them.

Step 3. Select the available output option, click Join, and download the processed file.

Keep in mind: Browser tools upload your music to a remote service. Large files can take a long time, and private or sensitive recordings are better processed with offline software. The service may also convert files internally rather than preserving the original codec.