You can create with as:
Folder: name => your_custom_font_name
In folder => create file: your_custom_font_name.css and all files fonts (ttf, eot, woff)
In file: your_custom_font_name.css => call link to fonts file:
This is ex about fonts of us get at here.
Please create a similar font package.
Next, go to Dashboard > Appearance > Theme Options > Fonts:
Hope you success!!