After you save all .wem files to a folder, also move the ww2ogg.exe and packed_codebooks_aoTuV_603.bin files to that same folder. Then create a BATCH file with this one line:
for /r %%i in (*) do (ww2ogg %%i --pcb packed_codebooks_aoTuV_603.bin)
From a command-line, move to the folder and run the batch file. When done, all the .wem files will have .ogg versions.
Simple (and tested)...
After you save all .wem files to a folder, also move the ww2ogg.exe and packed_codebooks_aoTuV_603.bin files to that same folder. Then create a BATCH file with this one line:
for /r %%i in (*) do (ww2ogg %%i --pcb packed_codebooks_aoTuV_603.bin)
From a command-line, move to the folder and run the batch file. When done, all the .wem files will have .ogg versions.