DAISY Pipeline

I must be overlooking something really obvious (so apologies in advance!)
but I just can't get xml:lang settings to carry through to TTS on Windows.
I always get the Windows default voice in the default language. I recall
reading a post by Romain from earlier in the year that suggested that this
is all we have at the moment.

I've tried to follow the guidance on the TTS Narrator FAQ
(http://www.daisy.org/forums/node/136) and MS's TTS tutorial
(http://msdn.microsoft.com/en-us/library/ms985684.aspx) but to no avail.
Inserting <lang langid="..."> tags renders the DTBook file invalid and
xml:lang isn't picked up at all.

Espeak (which is great for multilingual books on Linux) is also limited to
English in SAPI mode.

Would it be possible to use standard Espeak on Windows?

Thanks,
Gerald