Image of my menu:
Bought music maker from recent humble bundle, registered the EDM edition, updated, and restarted the software.
Where is the export to MP3 option?
This is a limitation of the free version. The special editons for 30$ (edm, trap, hip hop beat producer and 80s) only give you 3 additional soundpools and one additional instruments. Otherwise it will still have the limitations like in the free version.
You can unlock the mp3 support for by using the included coupons in the current plus or premium edition, by using an older music maker version (MX-2017) or when you buy this function single in the store.
More information can be found here:
https://www.magix.info/de/tutorials/how-to-unlock-functions-instruments-soundpools-and-presets--1200673/