How to move iTunes Library to iCloud

iTunes can show any unhidden past purchases that aren't stored locally on your computer with a cloud link that allows them to be streamed or downloaded. A subscription to iTunes Match extends this to matched or uploaded music in your library. Apple Music goes further allowing you to add content from the iTunes Music catalog to your iCloud Music Library. Once content is matched or uploaded you can select particular albums or tracks, right-click, and remove download to free up local storage. If you decide to go down this route make a complete backup of your library on external storage before you start to avoid issues with mismatches or loss of access to media if/when you choose to terminate your subscription.

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If your library knows the size of the file removing the local download won't change that. Stream would normally show for Internet Streams. If it shows for local or network tracks that is usually a sign that something has gone wrong at some point. Get Info > File tab > Location will show iCloud for content that is stored in the cloud rather than locally.

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