There is new version of the modified dll now at the Lame Libraries page at Rarewares. This is a 3.98 ICL10.1 compile and contains much more flexibility than previously. From the new .ini file:
[lame_enc]
LamePreset=V2.00
Stereo=JS
Scale=0.0
ExperimentalY=0
REM LamePreset is specified as follows:
REM For VBR settings V0.00 to V9.00, specify LamePreset=Vn.nnn.
REM The specified value will be chacked and defaulted to V2.0 if invalid.
REM
REM For ABR settings, specify LamePreset=ABRnnn, where nnn = desired bitrate.
REM The specified value will be checked and limited to within 8 - 320.
REM
REM Similarly, for CBR, specify LamePreset=CBRnnn, where nnn = desired bitrate.
REM For CBR, the indicated bitrate will be checked and will be adjusted to
REM the nearest valid CBR bitrate.
REM
REM If the 'LamePreset' line is invalid, it will default to 128kbps CBR, as normal.
REM
REM To specify Mono, specify Stereo=Mono
REM Please Note: In order for downmixing to Mono to work correctly, you will
REM need to select a setting on the CDex Settings page that allows you to
REM select Mono. Failure to do this will result in incorrect encoding.
REM To specify Joint Stereo, specify Stereo=JS
REM The default is Joint Stereo.
REM
REM Scale can be used to apply the ReplayGain factor to scale the samples
REM as floating point numbers within LAME before encoding.
REM Valid values are > 0.0 and less than 1.0, default = 0.0.
REM
REM ExperimentalY is used to toggle the switch ON or OFF. Set to 1 if you want
REM it changed to ON or OFF, depending whether it is already set.
REM If set to anything other than 1,it will be ignored.
REM
REM NOTE: ONLY the FIRST 5 lines of this file are read and used.