The vast majority of her albums are up on Spotify now. Xanadu is complicated with half the album being written by Jeff Lynne and the other being penned by Olivia’s long term writer and producer John Farrar. The LP was also on 2 different record labels when it was released as well. I’m sure they’ll sort it out eventually. I think Xanadu is still available on CD though it’s due for an update.
I always presumed all the songs from Xanadu were Jeff Lynne-penned. I was giving him too much credit! John Farrar is a genius: "Magic" is a 20 out of 10 song.