Yeah I don’t think Lapti Nek or Yub Nub as heard in the movie were ever on any soundtrack, or the original soundtrack. I agree though that it’s a great sign that we’re getting the original soundtracks back, fingers crossed the original movies aren’t far behind!
Actually I just looked at my rips of my anthology box set CDs in iTunes, and the film version of Yub Nub is included as a bonus track. Not Lapti Nek though.