I've created a handful of songs on MAGIX and want to post them on my Youtube channel to share with my friends, but everytime i go to Publish online the Share to Youtube option is greyed out. I've even gone under manage login details and entered my correct credentials for my youtube channel yet it is still greyed out. Any help would be much appreciated.
The output to YouTube has to be a video, not just audio. Thus you need an image or a video on one of the tracks that goes from the start to the end of the song. Once you have one, then the option will become active.
I do not recommend using this method at all.
You should export it first, check to make sure that it worked properly, and then upload to YouTube.