Audacity is a free and open source tool that lets you edit a sound file, such as mp3.
The Photos app in Windows 10 can split and merge videos. But the corresponding audio app, Groove, is just a simple player with no audio file editing feature. On the subject of sound editing, you can install a reliably good program, Audacity.
Although there are several audio editing programs, some of which are in the professional tool environment, we find it quite complex and awkward to do most of the common work on editing a mp3 file.
Audacity, on the contrary, is an easy, free, open source application that can do your job quickly and efficiently. Just open Audacity and drag the mp3 file you want to edit onto it. In addition to mp3, it accepts WAV, AIFF, AU, FLAC, AC3, M4A / M4R (AAC), and WMA files.
Your file is represented by a wavelength format. With Audacity you can cut a sound file into pieces, join two mp3 files or two tracks from files, import various sounds, record through the microphone, use various effects like LADSPA, LV2, VST, and more .
In the program you can add various plugins, which you can find in its official website. By default, Audacity does not replace the original file after editing. Creates a project for later editing, and whenever you are ready, you can export it to one of the MP3, WAV, AIFF, AU, FLAC, AC3, M4A / M4R (AAC) and WMA formats.
Audacity is multi-platform, meaning it supports Windows, Mac OS X and GNU / Linux. Today it's in the 2.3.0 version and you can download from here.