Question 1

How do I merge MP3 files into one?

Accepted Answer

Drop all the MP3s at once, put them in order with the up and down arrows, and press Join files. You get one MP3 with the files played back to back.

Question 2

Can I join files in different formats?

Accepted Answer

Yes. You can mix MP3, WAV, M4A, OGG, FLAC and the sound from videos. Every file is converted to the sample rate of the first one, and if any file is stereo the result is stereo.

Question 3

Can I add silence between the files?

Accepted Answer

Yes. Gap between files adds 0 to 5 seconds of silence between each pair, in 0.1 second steps.

Question 4

What does the crossfade do?

Accepted Answer

It fades the end of one file out while the next one fades in, so they overlap instead of stopping and starting. Set it from 0.5 to 10 seconds. A gap and a crossfade can't be used together; setting one resets the other.

Question 5

How many files can I join?

Accepted Answer

Free downloads join up to 5 files with a combined size of up to 100 MB. Pro removes both limits. You can still build and listen to a larger join before deciding.

Question 6

Will joining reduce the quality?

Accepted Answer

Each file is decoded and encoded once into the output format. Save as WAV or FLAC for no further loss, or as MP3 at 256 or 320 kbps if you need a smaller file.

Question 7

Are my files uploaded?

Accepted Answer

No. The files are joined on your device, in your browser, and never sent to a server.

Audio Joiner

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