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Neo - I deleted music off my memory card (all songs were duplicated) with Media GO. Once completed I wanted to move the remaining (non-duplicated songs 🙂 ) back to the memory card now all my songs are gone. It seems that the copy on the library was just an image. How can I get it back? I tried looking for a deleted bin/folder on the phone - nothing. My recycle bin on the pc also does not have anything. Please help guys
I would give this software a go at restoring deleted files. http://www.softpedia.com/get/System/Back-Up-and-Recovery/Restoration.shtml
Hey, do not worry. You can recover your music files using digital media recovery software from Stellar.
Just download the free version of the software to your computer system , connect your memory card and follow the instruction and you will able to get a preview of your recoverable music files.
here is the link to free version of th software-
http://www.stellarphotorecoverysoftware.com/download.php
If you satisfied with preview , go for the full version and recover your lost music files.
There's no removed files folder or similar on the phone or on the SD card. Once removed, they're gone. Have a look at the recovery programs suggested above. Might do it. Good luck! 
To recover lost, inaccessible and permanently deleted files of any type from Windows partitions, there are several free tools available but they don’t provide guarantee to success in every case. Kernel for Windows is a robust third party software that efficiently retrieves lost, deleted, damaged and inaccessible data from Windows partitions having FAT & NTFS file systems.
You can recover files from Xperia android phone with android data recovery tool, see this guide:
The tool helped me last time, hope that it helps you too.