Where Did My Voice Recorder Files Go After I Cut and Pasted and Hit Undo?

I wanted to clear up some space on my Samsung Galaxy S5, so I connected it to my Windows 8 laptop with a USB cord. I opened up my folder from my phone and I "cut" 10-15 files I created with the "Audio Recorder" app on my phone, and I "pasted" them into a folder on my computer. I did not like where I put them, so I hit control-z to "undo". They disappeared. I cannot find them on my phone or my computer anywhere. I even hit control-y to "redo" right away, but the files were gone and the "paste" option was grayed out. Please help me find my files!!! They were really important audio recordings of classes I needed. Any recommendations would be GREATLY appreciated!!!

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