The server now has a mutator called Smart Keybinds. With this mutator you can set up to 3 key binds for sayings you commonly use on the server, such as Nice Shot, Hello, or Thank you. You can also set an end of game message that is automatically said at the end of the map, such as Good Game. There is also a section for you to set a key to predefined commands.
To use this new tool open your nexgen control panel by pressing the say button and typing !o or !open and pressing enter. Click the client tab at the top then settings. Scroll to the bottom and find the NexgenSmartKeyBinds section.
For example if you wanted to bind the N key to say Nice Shot. You would go to the section for speech binds and type Nice Shot! in the first line then to the left click the box and press the N key. Click the save button at the bottom right.
Now in the game when you press N it will say Nice Shot!