New Delhi, Aug 24 (IANS) So what if the much-awaited song "Chammak challo", featuring Kareena Kapoor and rendered by international pop star Akon, from his mega-production "RA.One" was leaked online? Shah Rukh Khan is still excited about the official music launch of the movie in September.

"'RA.one' music to release in September...can't wait to put 'Chammak challo' on TV in the next few days. Finally, it's that time when u start letting the ownership of your film to pass onto the audience," Shah Rukh posted on his Twitter page.

The peppy song, which is rumoured to have Kareena dancing in a red sari, was leaked in May, and Shah Rukh was quite upset. However, he had said that the track that people have already heard and are hooked onto, is not the final version. So, one hopes there is more in store for eager listeners.

In the meantime, Shah Rukh is nursing his knee.

"Been away getting my knee treatment done. two days of intense pain. feel much better today and feel like getting bak to work," he tweeted further.

The gadget freak is also upbeat about his new acquisition.

"...and this is all being written on my new mac book pro. super excited to have the new machine...felt like a kid when i got it. so wanted it to keep up with my speed of life. yay!!" he added.

"RA.One", a superhero film, is slated to release Oct 26.