Automatically pull / assign ASIN - does such a tool exist?
 

Long-story short, I'm looking to convert EPUB to MOBI. I know I can do this in Calibre. What I'm looking for is a tool that will take my ebook files and automatically pull down and assign the ASIN so that the covers will show up properly in the Kindle app for Android. I know I could do this manually via Mobi2Mobi but I have a couple of hundred eBooks to move over. I'd like to do this in batch if possible.

Does such a tool exist? Can anyone please point me in the right direction? Thanks in advance.

:help: