I preview a lot of tracks each week before deciding if or where they will go in different sets. I normally put them drop them into a unsorted folder with a number of sub folders for each week. It would be great if you could pack them to a phone as a native phone playlist or folder. I know you can locate the tracks in explorer however if it’s a playlist made up from tracks from several folders or drives then it’s time consuming to pull them together, so sort of right click track list / folder and send to phone type feature. You can then take the tracks with you and sort them in your head before deciding which to include and which to skip.
You could use DropBox for that.