It doesn't always import samples properly. Let me run you through how I usually import samples (successfully) in Magix Music Maker MX.
I make a folder with an appropriate title, then a subfolder depending on what the samples are, e.g. drum samples = subfolder called 'Drums'.
I then put the samples into the subfolder. Once that is done, I go into Magix itself, click on add styles, select the folder (not subfolder) and click 'ok'.
Sometimes this works perfectly. Other times, the program seems to import them but they never show up in the soundpool. What is going wrong? Is there some kind of criteria regarding what you can call the folders you import the samples from? Any help is greatly appreciated! Thanks