The short answer is yes, if you wrote it.
We are happy to record any script that you send, however, please be aware that if your script was written by one of our competitors they may be claiming copyright on that script. It is your responsibility to check that your continued use of the script is permitted by them. If in doubt, we suggest you re-write it. It is not hard to do, and there are only so many ways you can say please hold 🙂