Hi Michael,
Your same issue has been posted a couple of times recently. Definitely the multiplexed audio causing the short audio in Encore. Use the DEFAULT export setting of NONE for Multiplexing and you should get the .m2v and .wav (PCM) files. In Encore, use "Import As > Timeline" and select BOTH files at once and they come into an Encore timeline together. Note that any DVD chapter markers added in Premiere will also import using this method.
The video will NOT transcode (unless file is too large for disc) and the audio will very quickly transcode to the default Dolby Digital when Building. I noticed your average encode rate is 4.2 and that seems quite high for a 190 minute program. Are you burning to a dual-layer DVD? If not, the calculator I tried suggest a bitrate of 2.9 which seems more realistic for a 4.7GB DVD. Otherwise, Encore may need to re-encode the video again so it fits. More time and quality loss, so double-check those settings to get it right the first time.
Thanks
Jeff Pulera
Safe Harbor Computers