Preparing Multimedia for Sony DAV TZ130 DVD player USB

Bear with me while I attempt preparing a mencoder command that converts my multimedia files into something that this darn DVD player can understand.

mencoder -mc 0 -noskip -vf expand=:::::16/9,scale=720:480,hqdn3d,harddup -ovc xvid -oac lavc -channels 6 -xvidencopts fixed_quant=3.8:me_quality=6:noqpel:nogmc:trellis:chroma_me:
chroma_opt:hq_ac:vhq=4:lumi_mask:max_key_interval=300:quant_type=mpeg:
max_bframes=2:closed_gop:nopacked:profile=asp5:autoaspect:bvhq=1
-lavcopts acodec=ac3 -o outfile.avi

The player thinks about playing the file….. then stops thinking and returns to the menu. 🙁

This works, but only 2 Audio channels:

mencoder -mc 0 -noskip -vf expand=:::::16/9,scale=720:576,hqdn3d,harddup -ovc xvid -oac mp3lame -xvidencopts fixed_quant=3.8:me_quality=6:noqpel:nogmc:trellis:chroma_me:
chroma_opt:hq_ac:vhq=4:lumi_mask:max_key_interval=300:quant_type=mpeg:
max_bframes=2:closed_gop:nopacked:profile=asp5:autoaspect:bvhq=1
-lameopts vbr=2:q=6:aq=2 -o output.avi input.m4v