http://www.authorstream.com/Presentation/fp24-4493653-sound/

https://docs.google.com/presentation/d/e/2PACX-1vSA6HCvJ9VYmIXGnht_zcl-eaiWl_EvvmJbGxetAQVtjEXNRz1kHheTkK4arwvvAw/pub?start=true&loop=true&delayms=3000

https://picasion.com/

http://www.authorstream.com/Presentation/fp24-4493304-sound/

https://docs.google.com/presentation/d/e/2PACX-1vTXLGgddlXjpV0OfNLEfq2LLJfV3nDbO7gilUtyEGyPz_bQ3bKxNKBa-ws3JXRL7Q/pub?start=true&loop=true&delayms=3000

https://picasion.com/

http://www.authorstream.com/Presentation/fp24-4493350-sound/

https://docs.google.com

/presentation/d/e/2PACX-1vR6yh2Zn3Escosty5qax0qkDSbvgt160B-Ot_UyMV3jHT5_r85OppRk91LWEitjNw/pub?start=true&loop=false&delayms=3000

http://www.authorstream.com/Presentation/fp24-4492909-sound/