Purely performance-wise it's probably OK. Make sure the specs of your netbook meet the official requirements for Music Maker. They're posted on the Magix website. Do all those thingies have a sufficient screen resolution as well? You don't want something like that to get in the way. The only other problem I can see (and possibly a major one) is the sound hardware. Like with pretty much any notebook and portable computing solution, the audio hardware/driver is probably going to be crap. Especially if you actually want to perform recordings, this is a no-go. An external audio interface (e.g. USB) might be in order.
I just installed Magix Music Maker 14 on my netbook. The only problem is that i get a message that my screen resolution is to low =(
So i can't start the program =(
I hope Magix will have a fix for this cause i really want to start working with it on my netbook, also if i have a small screen and bad soundcard :)