Help with netgear and subtitles

Hey guys. I have a Netgear device which is a bit odd: it only supports MP3 audio, it supports H264 and soft subtitles from .mkv files. Unfortunately, most .mkvs have AAC or AC3 audio so I need to transcode them to MP3. Unfortunately, soft subtitles aren't supported with mpeg streams (I can't get them to work no matter what) and I don't want to enable burn-in video transcoding. So now I'm stuck with either mp3 audio or soft subtitles. i.e. on the generic dlna profile, file is natively transported as matroska and I can select the soft subtitles on the device. If I use the following config:

  Code:

<Profile id="Netgear" name="Netgear" extendsProfileId="1">
   <Transcoding>
      <Video targetContainer="m2ts" targetACodec="mp3" aBitrate="512">
      <Matches container="*" />
      </Video>
   </Transcoding>
      <Subtitles>
         <SoftSubs mime-type="text/srt" />         
      </Subtitles>
   </Profile>

... I can get the audio working, but not the soft subtitles.
Does anyone have any ideas?

[zip]

The softsubs (external, not embedded) are only served as an additional resource and if the renderer doesn't support it, it won't work. You cannot embed to mpegts, as you already noticed. So the only option is burn in.