I am using Text speaker with the Microsoft Anna voice for reading a novel. Every chapter ends with **** and Text Speaker is reading it as ‘asterisk asterisk asterisk asterisk’. How can I skip the pronunciation of the (*) asterisk character?

I am using the trial version of My Screen Recorder. I want to change the default file name, which is shown when the recording gets completed. Currently it shows 'Video' and I want to change it to something else. Can I do this?