#1. Conversion Speed
For now, only the Windows version of TuneFab Spotify Music Converter has the option to adjust conversion speed. If you are the Windows user, then go to "Options" > "Advanced" > "Conversion Speed", you will be able to select the conversion speed as 1X or 5X.
#2. Change the Language of TuneFab Spotify Music Converter
The Windows version of TuneFab Spotify Music Converter supports multiple languages. Go to "Options" > "General" > "Language" and select your desired language from the drop-down menu. Currently the software supports English, Simplified Chinese and Traditional Chinese.