All these files have been collected randomly over several years. Some come from loyalties-free audio CD, others have been recorded in movies and TV series, and others were downloaded on the Internet. I do not remember (or I have never known) their origin, their name or their original format. If you want to use these sounds in a program intended to be distributed to the public, please make sure that they are free for use. If you can not be sure (which is likely), you should replace them with sounds acquired from one of the many specialized sites on the web.