Audio dropping from recorded stream during playback

NOTE: I posted this same question on the Adobe Groups FMS
Users page.
I am using Stream.play() on the server side to set up a hub
to switch between live streams and recorded streams. Basically, I
have a live video stream that we want to switch in a recorded
segment (flv) at the end of which we go back to the live stream.
Both the live stream and the recorded stream are at the same data
rate.
I'm following the code samples from:
http://livedocs.adobe.com/flashmediaserver/3.0/hpdocs/help.html?content=00000386.html
The problem I'm having is that the audio starts for the
recorded segment but goes silent after the first 2-3 seconds of
audio. This happens every time the clip is played. This clip plays
fine when linked to directly, without being part of the hub system
using Stream.play(). I have tried this with several recorded
segments with the same result.
Has anyone seen this happen before?

Thanks for the suggestion Jody. Would this work in 3.0.3 as I
am not on 3.5 yet? I tried adding this to the fms.ini for 3.0.3 and
nothing changed. It may also be worth noting that I am having the
issue even with only a single user connected.
When the client sends a message to the server to play my
"demo" the server calls the following lines of code:
application.mainStream = Stream.get("foo");
application.mainStream.play("shortDemo", 0, -1, false,
application.myVODConn);
application.mainStream.play("liveEncoderVideo", -1, -1,
false);
This should switch from the currently playing
"liveEncoderVideo" stream to the "shortDemo" and then back.
The myVODConn is getting set up right as I can see the demo
but again the audio just drops out after 2-3 secs. I also tried to
use the AdobeBand sample files and I get the same thing.

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