Yes! Unlike most other foundries, our EULA specifically allows font modifications and conversion. For example: If you have an application that only supports TrueType-flavoured fonts, you can convert our PostScript-flavoured fonts to TrueType.
But please keep in mind that the right to change our fonts doesn’t effect the licensing. For example: If you want to use our fonts as webfonts, you need a proper webfont license. You cannot just create the webfonts yourself based on the desktop fonts we licensed to you.