Skyrim needs .fuz files for the sound to work properly. Sometimes it will read the .wav and .lip files, but not very often, which is probably what causes those subtitles to go by so fast.

I'll try and convert those to see if it'll make a difference for the few people for who it doesn't work.

Aha! Ysne is correct - I tried converting your xwm/lip to fuz (using http://www.creationkit.com/How_to_generate_voice_files_by_batch and http://skyrim.nexusmods.com/downloads/file.php?id=950)...

...and it works! I now have the voice playing correctly in my game.

Alright, did that and put it up for download. Hopefully this will finally fix any issues.

thanks