Duplicate Photos and Music Files – What's the Easiest Fix?

My photo and music folders are overflowing with duplicates, and it's getting out of hand. I probably have hundreds of the same songs and images scattered in different folders. I’m looking for the easiest, most user-friendly way to clean it all up without losing anything important. Are there any tools or apps (preferably free or affordable) that specialize in media duplicates? Would love suggestions for Windows or cross-platform options. Thanks in advance!