Can easy trim you audio.It support "aiff","aif","wav", "mp3","m4a" format. 1.Drag you audio to gray area or click upper left button or click menu "open" item to import audio to the App. 2.You will find audio waveform and trim area.Now you can resize trim area or change the trim area origin. 3.Use the play button to preview the audio or trimmed audio. 4.Click "start" button to export the trimmed audio.