If the sound that gets affected by the titles is in music channel... then
just remove it from there and save as DV AVI. Now import the saved file in
another poject and apply the previous music track.
If the problem occurs in the movie's own audio track then :
1. save a WMV movie with maximum res profile say "movie_goodaudio.wmv"
2. save again using DV AVI profile say "movie_goodvideo.avi"
The avi would have bad audio because of the titles but dont worry. The good
audio is in WMV. (make sure it is so).
3. Now in another project bring both WMV and DV AVI movies.
4. Move the avi file in the video track. Disable its audio by right clicking
in timeline view and selecing Mute
5. Drag the WMV in the music track (yes you can place a "movie" int he music
track).
6. Save as DV AVI.
This dv avi movie should have a good audio track as well as good video.
--
Rehan
www.rehanfx.org - get more effects and transitions for Windows Movie Maker