Yay! I finally get to help somebody

. To export wav from the Boss you need a USB cord. I'm sure you knew that

. Hook up your USB cord to your Boss and to your Computer. You don't have to select any menus as far as I've experienced, the computer will automatically open a window when you hook it up.
Press the USB button on the Boss. Select EXPORTwith the scroll dial the press ENTER. Press the Left/Rigth<> cursor to select WAV or AIFF, go ahead and select WAV. Then select with the scroll dial the track/virtual track that you want to save to WAV. Know before hand the track # and Virtual track # of your interview recording.
Then press ENTER. The conversion will take a few minutes possibly but it will begin taking place.
When the conversion is complete you'll see an icon pop on the screen that will say either BOSS_BR-864 or Removable Disk. Click that Icon and drag the WAV to the Computers folder, drop it in that folder. When this is all done 'right' click the BOSS_BR-864 or Removable Disk icon to "eject" the disk. Then the interview will be a WAV file on your computer that you can burn to CD using your CD burning software the almost all computers now have to pull up the file and set it to burn. Hope all goes well, I'll try to help more if you have any more loose ends.
The BR864 is an amazing little machine isn't it, portable/battery powered, great sound quality, 3 independent Effects processors for Mic, guitars, and line in, Phase trainer where you can record something into it and slow down the tempo without changing the pitch, awesome for absorbing very complex guitar riffs of bands you like. Its got a freakin Tuner, onboard mic, hell you can even record 4 tracks mixes into it and beef them up. A fun little machine, i love it. Peace.