Drum sequencers are my favorite tools but I dont know if I can add new drum kits to beatbox 2. Could someone help?
You did not mention the Music Maker version you are using.
I am giving you reference from PDF help, Music Maker 16 Premium page 121 and MMMX page 125. Both showing the same method for adding sound to drum kit.
Procedure from Music Maker, open Beat Box, now you can drag you wave file or a folder. Read details below.
"New drum or effect sounds can by added to the current drum kit by
drag & drop from Windows Explorer. Drag a wave file to a drum
instrument to create a new drum sound based on this sample.
BeatBox 2 copies the sample into the sample folder to make sure
that the instrument or kit created can be used again later. You can
drag a complete folder with wave files to the drum kit to create a kit
based on those samples."
Hope the above information will be useful.