Changing a work's title (in a multi-CD set)

Sometimes I like to have a different title for a work. In the concerned 3-CD set, I’d like tracks 1-9 to be identified as “Also Sprach Zarathustra,” as that is the more familiar title. I played with WORK and PART tags, to no avail: Roon likes “Concert Overture in B minor, o.Op. 30 (TrV 41, AV 3” and sticks to it. Any way to change things? (And what is that “o.Op” stuff?)