Yes, this is possible. You need to use file types for sweepers and other tracks you do not want to send title for: http://manual.djsoft.net/radioboss/en/using_different_types_of_files.htm
In the file type settings you can enable the "Do not sent title to the server" option to prevent sending the title to the server, and if you also want to exclude them from RadioBOSS log window, uncheck the "Include tracks of this type in report" option.