Noobomlet

I was trying to make or REINCARNATE SKIBBZ Hand Rig but this ERROR Happened it Said Couldn't save because the Parts need to have A unique Names!!! Pls help

Im Using the newest version of Mineimator This 2018, when I tried to import a sound in Mine imator and it did work, however I cant even heard it. I double check my Speakers they all work also my Music Player in PC also work. I Restart my Computer. The mine imator still hasnt sounds to heard..........PLEASE I BEG YOU TO FIX TI!