Sony DVD Architect Studio 4.5

[garp]

Hi all

I have a rather annoying problem with this software... I have captured multiple DV tapes, all of which play perfectly in media player, however, once in DVD Architect the sound becomes a problem... as in no sound at all. Now, some of them are fine, the video plays along with sound and all is happy and well. then some others, the video plays and no sound. I have no idea what could be wrong because file info for each of them is identical, except obviously for the duration of the video, so its not like its different format or something. Also, the problem occurs in the software and on the dvd if i try to burn it. Any help.... please.