wow i'm surprised i eventually figured it out. i'm now streaming a video from my nas just by putting in the ip of my nas and the video file. if only the file support wasn't so limited (most of my collection is vob/avi). well hopefully shared file access and/or greater file support will be added by roku/developer sometime soon (and some type of internet video/network tv show aggregator/hulu,clicker,channels.com,etc would be awesome). i would love to be able to stick to roku vs having to buy popbox/boxee.
ffmpeg -i INPUT.vob -vn -acodec copy INPUT.ac3
BeSweet.exe -core( -input "INPUT.ac3" -output "INPUT.wav" -2ch ) -azid( -n1 -c normal -L -3db --maximize ) -profile( ~~~~~ Default Profile ~~~~~ )
ffmpeg -i INPUT.vob -i INPUT.wav -map 0:0 -map 1:0 -acodec aac -ab 160k -ac 2 -vcodec libx264 -vpre normal -crf 21 -threads 0 -s 720x480 -t 1:39:39 -aspect 4:3 -r 29.97 OUTPUT.mp4