Okay I'm trying to convert a OGM Anime movie with subtitles to DVD and so far I've completed 3 out of 4 steps out of the entire process. Here is what I've done so far:

1) I extracted two ogm audio streams (Eng, Jap) and the .srt english subtitle from the video with VirtualDubMod.
2) I converted the divx video to mpeg2 with TMPGEnc
3) Converted the ogm audio to wav with winamp and then coverted the wav to mp2 using Headac3he

4) NOW, here's my problem

I use TMPGEnc DVD author for all my DVDs. However TMPGEnc DVD author only accepts one audio stream and no subtitle. How do I add both audio streams and subtitle to the video before sending the file to the DVD author? Which subtitle program should I use to attach the .srt file I extracted with virtualdubmod to mpeg2?