Smith attended the Los Angeles Recording Workshop from 1994 to 1995. She started working for Advantage Audio in April of 1995 and has been working there ever since. Most of her career is built around editing dialogue, and has worked on many different forms of media formats over the years.
During her time at Advantage Audio, she has won two shared Emmys for Sound Editing, one for Roughnecks: Starship Troopers Chronicles and another for Buzz Lightyear of Star Command, and won a shared MPSE Golden Reel Award in early 2014 for her work on The Fairly Odd Parents as the supervising dialog director. In addition to this she has received four MPSE Golden Reel nominations.