Indeed, the sleeve of O Soundtrack My Heart bears great thematic similarity to the cover of Jarre's Oxygène 7–13 album.
Oxygene 7–13, an album by Jean Michel Jarre, released in 1997
The Orb's single "Toxygene" was originally intended for release as a remix for the single release of "Oxygène 8", but was rejected by Jarre for being too distant from the original.
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A number of remixes of Oxygène 7–13 tracks have been made, including those comprising most of the album Oxygène | Oxygene 7–13 | Oxygene: New Master Recording | Oxygène 7–13 | Similar
It contains remixes of tracks from Jean Michel Jarre's Oxygène 7–13 album, as well as the "Rendez-Vous 98" single.