Hi Paul,
to understand how to obtain the desired result you can refer to these guides:
http://www.webratio.com/learn/learningobject/how-to-deal-with-blobs
https://www.webratio.com/learn/learningobject/using-the-script-component
Moreover you can find other topics related to this request, for example:
http://www.webratio.com/forum/question-details/automatic-file-upload-
http://www.webratio.com/forum/question-details/upload-file-and-the-move-it-to-other-location
http://www.webratio.com/forum/question-details/file-analysis-then-update-mysql-database
If you need to send files via FTP you can refer to the FTP component available on the Add-On Store
https://www.webratio.com/store/item-details/ftp-