Mpg to flv - no audio options

i’m trying to convert mpg videos to flv videos. i’m using adobe cs3 flv converter as well as quicktime pro. both yield a flv with no audio.

i open the video in quicktime pro.
it plays with sound.
then i go up to FILE > EXPORT > MOVIE TO FLASH VIDEO (FLV)
click on OPTIONS
then click on AUDIO. it’s all grey. no audio options.
any ideas?

i am aware of this problem/solution regarding flv’s stopping short but i’m not even get audio options.
“It has everything to do with sound sample rate! You need to export your movies that are currently using 22.050 kHz and to a new quicktime movie with a 44.100 kHz sample rate. THEN export as a .flv with whatever frame rate and .mp3 compression rate you need. This should fix the problem!”
via adobe forum