LAME Encoder Help Needed

Hi,

I've been playing around with CDex and have updated the LAME Encoder but can't seem to gain access to all of the VBR presets, specifically:

--preset medium

This preset should provide near transparency to most people on most music.
The resulting bitrate should be in the 150-180kbps range, according to music complexity.

--preset standard

This preset should generally be transparent to most people on most music and is already quite high in quality.
The resulting bitrate should be in the 170-210kbps range, according to music complexity.

Does anyone have any ideas how to gain access to these presets in CDex or any other GUI interfaces that would have access to all these presets?

Thanks for the help,

Jackson