I just buy music maker premium.
I would like to create autotune effect on voices recording. but the elastic audio option is not available....
as explained here: 
why the elastic audio option is not available?
what option can I use istead to create autotune effect?
@Delroy-Fub If you can load VST plugins in your version of Music Maker (not the free edition), then you could use Melda MAutoPitch, which can create this robot-like Autotune effect. It's is available as a free plugin (But the free version cannot save your own presets).
The video above is 10 years old and no longer valid. Sadly, today Magix only offers VocalTune 2 in Music Maker, with limited features. You now need Samplitude Pro X for the Elastic Audio functionality.
@SP.
Thanks for your feedback and the tips!