Hi,

0.8.0 mlt was a huge milestone for proper working Kdenlive, and now we have 0.8.2 ! - which I hope will solve many irritating issues (like AV out of sync) so hopefully Kdnelvie will finally become very stable, professional tool and this topic is a good example:
http://www.kdenlive.org/forum/music-video-paris-color-grading-example

MLT website:
http://mltframework.org/bin/view/MLT