If you want to share songs you added with other players, the easiest way is to make a songpack.
Copy the whole StreamingAssets folder and paste it somewhere else
In the copy, delete song_list.json and info_template.json
In Each of the folders (Charts, Info, Music), delete files for any songs you don't want to include in the songpack
Open import_list.json and add the file names for the info.json files of the songs you want to include to the list. All entries should be "in quotation marks" and be separated by commas. The last entry shouldn't have a comma after it.
Save import_list.json
Rename the copied StreamingAssets folder to your songpack name and zip it
Now you can share the zip file, and other players can import it by unzipping it and selecting the folder inside
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