The versions
Original: the film in the language it was shot in. Dubbed: another language recorded over it, often Hindi for Hollywood and South Indian films. Dual audio: two or more audio tracks in the same stream. Subtitles: text in English or another language on screen.
Where to switch
In the player, the speech-bubble icon or the Audio and Subtitles menu lists what is available. Indian services usually carry South Indian hits like Leo or Jailer in Tamil, Telugu, Hindi and more; global services add English subtitles.
The language sticker
On CucuFlix posters, the red sticker names the original language: Hindi, Telugu, Tamil, Malayalam, K-Drama or Italian. The title page lists the original language too, and the Languages page sorts the catalogue by it.