1) Audacity is a free, open source audio software that allows users to record, edit, and export audio files.
2) The document discusses how teachers can use Audacity to create customized audio resources and oral learning tasks for students, such as listening exercises, pronunciation practice, and speaking assignments.
3) Key features of Audacity include recording live audio, editing existing audio files, applying effects like changing speed or pitch, and exporting files in common audio formats.