asterisk users - May 2008 - No sound with Playback() and Background()

Hi

I've got a Dell with Intel Xeon and no Zaptel hardware installed. 
However, as it needs to do IAX trunking and MeetMe conferences I need 
timing enabled using ztDummy.

However, when enabling ztDummy, Playback() and Background() both fail to 
play.

If I place NoOp(${PLAYBACKSTATUS}) after the Playback() call it never 
reaches it. It hangs on the playback then kills the call after a certain 
time.

As soon as I rmmod ztdummy and zaptel it starts working again.

I've found the following mail list thread which seems to be very similar 
but no solution came to pass: 
http://readlist.com/lists/lists.digium.com/asterisk-users/9/47641.html

I'd be very grateful for anyones input.

All the best.

Doug

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