Is there a way to create a Smart Playlist in iTunes that will contain the songs in my library that have been downloaded locally? I have to reduce the bandwidth used at my job but I can download files at night and I want to only play songs that are downloaded to my computer (plus I don't want to play all the songs I own :-)).
If you use the "location" parameter, and select "is on this computer", that will show only the ones downloaded—providing you don't have any other music.
This works for me, as I want to keep the storage on my MacBook Air to the minimum.
Try setting the "Date Modified" parameter to "in the last [n] months". It worked for me on Windows 10.