Ok, after one day of craziness I could make it work following a modified version of the instructions found here.
I will assume you have MiKTeX installed in a folder called "MiKTeK"
- Download this package (it's a modified version of the one I found in the page linked above).
- Copy ‘texmf/dvips/config/wolfram.map’ to ‘MiKTeK/fonts/map/dvips/wolfram/’ – create the folders if missing
- Copy ‘texmf/pdftex/config/pdfwolfram.map’ to ‘MiKTeK/fonts/map/pdftex/wolfram/’
- Copy all subfolders from ‘texmf/fonts’ (afm/wolfram/mma …) to the corresponding folders in ‘MiKTeK/fonts/’
- Copy all files from ‘tfm/public/mma’ in ‘MiKTeK/fonts/tfm/public/mma’
- Copy the folder ‘mma’ to ‘MiKTeK/source/latex/mma’
- Copy the folder ‘texmf/tex/latex/wolfram’ to ‘MiKTeX/tex/latex/wolfram’
- Enable the map files by opening ‘MiKTeX/miktex/config/updmap.cfg’ with some text editor and adding the line: "Map wolfram.map"
- Open the MiXTeX setting as an administrator (from start menu) and hit "Refresh FNDB".
All the fonts now work for me.