Blues Dancer

Screetching sound for me within 3 seconds of testing it after install.I dont know if it is from interference but I turned down volumn right away. The sound escalated within 2 seconds. Hopefully there was no damage to my speakers or mic? I went to this site immediatelly to see if there was a warning in some beginners manual about this? If not it may be something that needs investigating and taught to beginners so they don't have damage occur imediatly after they first run the program?