no, i believe the 9,999 song limit is for the number of tracks you download to a total of 3 devices. its 3,333 on each device. you download a song or album so you can listen to it offline. when you are online, you are streaming the songs, and you get unlimited streams on the premium package. you can follow as many artists as you like, and you can make lots and lots of playlists, and you can follow all the playlists you want. once you download a song onto a device, you can listen to it as many times as you like, in places with no wi-fi. this is useful if you use a device as a portable music player. there is the option to use cellular data, to stream songs while in places with no wi-fi but this would have an extra cost with your cellular company depending on how much they charge you for data transfer.
*edit* I also had it clarified for me this morning that once you have 3,333 songs on a device, you can delete one or more tracks anytime and you get the space back to download replacement tracks. so if you delete 10 songs you can download another 10 songs. you can do this whenever you like, as often as you like so the 3,333 downloaded songs isnt much of a restriction.
hope this clarifies it a bit for you. if you need to know more please read the user agreement.
