The document describes the post-production editing process for an advertisement audio file in Reaper. Key steps included: cutting unnecessary parts from the voice recording to make it 34-36 seconds; placing background music and sound effects alongside the voiceover; editing the placement and length of the music and sleigh bell sound effect to set the Christmas mood and align with the voiceover. The final advertisement was produced after multiple rounds of listening and trimming audio clips as needed for a professional finished product.