The Blade MP3 encoder configuration is quite simple since it only allows for selection of the bitrate. Higher bitrates results in smaller quality loss at the cost of larger MP3 files. Bitrates above 192 tend to give little or none recognizable quality gain though.
By clicking on the Blade logo at the upper right you will see a dialog like this:
This gives you a summary of the current Blade encoder in use by CDGFix 3 Super, as well as a link to the Blade homepage.
You may freely download and install newer version of the Blade encoder for use with CDGFix 3 Super. Make sure the encoder you download is compiled for Microsoft Windows, name it BladeEnc.dll, and copy it to the CDGFix 3 Super installation folder (which is normally C:\Program Files\CDGFix Crew\CDGFix 3.X Super).