Thanks Mr. Belvedere!
Great, Media Monkey did the right job. !!!
->> foobar2000 can't overwrite existing file when reading from it. I must store converted files into another location using %path% formatting option which results in duplicate file extensions. Also it cannot use LAME for encoding 128kbps CBR. I changed LAME source code for that purpose, now LAME always encode in CBR...
And finally I know about degradation, but I'd like to have all my files stored in 128kbps CBR