Downmix 5.1 audio files to stereo

Hi folks,

I’ve got a bunch of 5.1 interleaved wav files that i need to downmix to stereo. Anybody know if this is possible in Wavelab 8.5? I could do it on a case by case basis in Logic using the Downmixer plugin, but i have about 150 files here so i was hoping a batch process would do it.

Try this:
2015-12-07 15_07_51.png