My girl wants to do a report on a creative way. She did some interviews and now she wants to make an audiodocument to mix parts of the interviews in a text spoken by her. In Audacity it is is not clear how I can select parts of interviews, store them in a folder or map or anything and, later on, getting them from the map and mixing them in a new recording.
You may want to use the commands in the Edit Menu to cut or copy a selection then paste it in a new Audacity track. If you need to create a new track, use the Tracks Menu.
If you want to work on it over several days, save it as an Audacity Project http://manual.audacityteam.org/o/man/audacity_projects.html. The project can contain multiple Audacity tracks. Export a WAV as backup before you close the project for the day http://manual.audacityteam.org/o/man/exporting_audio.html.
Reopen the saved project. If you have recordings already as separate audio files, import them into the project http://manual.audacityteam.org/o/man/importing_audio.html.
All Audacity tracks above one another in the project are implicitly mixed. Use the gain and pan sliders on the tracks to adjust the mix http://manual.audacityteam.org/o/man/mixing.html.