need a little help plz just bought the Sony DRU500A

[rencodeit?]

i just bought a Sony DRU500A and i am trying to encode an avi to dvd . i can do the avi samples just fine with my dvd (sonic) with no encoding on my part but when i try to do the whole avi the burn light isnt lite up. through some research i found out it was showing file size to big.i learned this by loading a 2520 bitrate standard mpeg-2 encoded for svcd into the my dvd program it and it showed 2.2 gigs left after only an 800 mb file was loaded.so on to the question i encoded the avi with tmpgenc to dvd using the dvd template and ended up with a 2.2gig mpeg2 plays fine in power dvd but when i load it to my dvd it ask for an audio file and says that no audio was detected in the clip. if i cut a small piece of the mpeg it opens it fine and sound is there so any ideas on going from avi to dvd would greatly be aprecited thnks in advance

[rencodeit?]

ok from reading other post using the same drive i am thinking that the problem is my audio setting as my dvd wont do ac3 audio it only does pcm audio which according to what i read is larger there for giving me the outta room problem. so now i geuss i am asking what audio format should i encode my sound to so that my dvd will use it with out taking up 3 times the space? I saw in another post a guy uses 48k mpeg1 layer2 i will try that in a few hours i am at work now and cant test any ideas would be greatly apreciated