vlc can't play FLVs with speex audio

VLC version: v1.0 Platform: Mac OS X 10.5.7, but this probably happens on all platforms.

I have some audio-only FLVs. The ones that have the audio encoded with nellymoser will play. However, ones with the audio encoded with speex won't play (the player window will act as if its playing but no sound is heard).

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