a problem with a image

[Hulrick]

Hello there i bougth a skyoe module few days ago but i got a problem this is:

http://addons.prestashop.com/es/aplicaciones-front-office-prestashop-modulos/17789-skype-call-button.html

and this is my shop:
http://libiddus.com/potenciadores-sexuales/220-caliplus-caliplus-suplemento-que-aumenta-el-vigor-y-la-potencia-sexualorgasmos-intensos-caliplus-mexico-aumenta-el-vigor-sexual.html

 

well it works well but i want to changue the image, the other problem is the image is on they host so i try to find the pat of the file but i cant find it, may some help me? im sure  some one is good on this, goo day!