Start with the source tracks
When you stop a multi-source recording, each selected input is loaded into the multitrack editor. Use the waveform and playback to find the section you want to keep.
Save an .amss session before a longer edit so you can reopen the separate tracks later.
Work on the relevant track
Adjust track volume for the balance you want. Mute a track to leave it out of the current mix, or Solo it while checking a problem. Trim the relevant clip rather than treating every source as one inseparable recording.
Use the editor’s undo workflow when an edit goes further than intended, and listen again around the boundaries of a cut.
Export and check the result
Export / Download produces the current mix as MP3, WAV or FLAC. Mute, Solo, volume and pan affect which tracks you hear in that mix.
For one source file, solo the required track and export it. Save the .amss session separately if you need to retain every editable track.