It's begun.
3 seconds sound clip from the TRON (1982) movie soundboard.
You can hear this line at 01:07:39 in the Blu-ray version of the movie.
Quote context
[...]
- The tower guardian is helping him.
- Confirm.
- I am creating the information on your disk that will erase the MCP and change the system.
- Dedicate yourself to getting the disk into the heart of the MCP.
[...]