"curate" has become quite a fashionable word recently. The origin is the world of museums and art. "curators" are responsible for artefacts and artworks - their storage, display and use. The usage in your context is similar. Probably, this person will be responsible for choosing the tracks, ensure their quality, and be responsible for any changes. I don't know enough French to know the best translation, but the meaning is more or less "manage responsibly and with care".