lame.exe
Код:

usage: lame.exe [options] <infile> [outfile]
<infile> and/or <outfile> can be "-", which means stdin/stdout.
RECOMMENDED:
lame -V2 input.wav output.mp3
OPTIONS:
-b bitrate set the bitrate, default 128 kbps
-h higher quality, but a little slower. Recommended.
-f fast mode (lower quality)
-V n quality setting for VBR. default n=4
0=high quality,bigger files. 9=smaller files
--preset type type must be "medium", "standard", "extreme", "insane",
or a value for an average desired bitrate and depending
on the value specified, appropriate quality settings will
be used.
"--preset help" gives more info on these
--priority type sets the process priority
0,1 = Low priority
2 = normal priority
3,4 = High priority
--longhelp full list of options