I don't stream music really. I might listen to a little bit on YouTube, but I prefer MP3 files and having it local. I don't have to worry about data usage etc. I have 256 gigs on my hard drive for my cell phone and I was able to save over 2 gigs using this tool www.remosoftware.com/info/find-an...
remosoftware.com
Best Duplicate Remover and Finder- Find and Delete Duplicate Music Files
Here is a streamlined way to find and delete the duplicate music files. This page also expalins how to remove duplicates from Music library.