The initial voting options are just a testing ones.
We will delete those in few days and put proper ones when we decide what is worth voting for.
As for now: developers put voting options, registered users vote for them on user pages. Each user can vote only once for each option.
The results of voting are public and visible on WIP page (www.renoise.com/wip.php
Using voting registered users and developers will be able to decide more easily which direction should Renoise take so it is good for both of us.
Have fun using it!