[shiny]

Hi I wonder if anyone can help. My husband is registered blind and has Pearl Open book software which is great for converting photos of paper books into electronic format, he can then get the computer to convert it into audio format - i think its mp3 and he can then transfer to his mp3 player.(simple Usb stick type)
Anyway he is wanting a few very specific books for christmas and some of them i cant get paper version but can get kindle version or sainsburys ebook version.
i have been told i can use calibre for conversion but i cant find out if this will sucessfully convert either kindle or the ebook mentioned into mp3 for him.
Any advice would be gratfully received. Please go easy on me i am not a computer expert!
thanks