Help with Nero please…

Ok so i have 24 episodes from a show and they are in avi. format but when i have burned them all into Data DVD, once i put it into my DVD it plays but it does not have any sound until the last two episodes. This never happened until today, so i am wondering why this is happening and also how can i solve this problem?
Answer #1
please help
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Answer #2
those files have sounds wen u play them in pc?
Answer #3
prob wont help…but double check the audio files on the first 22 episodes and see if its different from the last 2…i put mkvs on this external hdd to watch on my tv and was wondering why i could see it on some but not hear it, it turned out some of the mkv files were “dts” and wouldnt work with my tv and some were “ac3” which would work on my tvr…i have to use xilisoft to convert the audio to something diff…