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Help! Voice Sample MCB2130

I am having a lot of trouble, with the MCB2130 board, trying to get the sample program 'Voice' to load up correctly.
I have two MCB2130 Boards. One is supplied with the Cx51 software dated 02.2005 the other is supplied with Cx51 software dated 06.2005 but they both do the same thing.
I install the Cx51 software ("D:-ARM-'Setup'"). I open the Cx51 software, then go to "Project-Open Project-C:-Keil-ARM-Boards-Keil-MCB2130-VoicePlayer-Voice.uv2".
I then go to 'Options for Target' and click on "Device-LPC2138" then "Output-Create HEX File-HEX Format-HEX386".
I then click 'Rebuild Target' and it is built (the Cx51 software dated 06.2005 returns a warning of "'cnt':unreferenced local variable" and although I have been through all the codes and am convinced they are the same, the Cx51 dated 02.2005 does not return this warning).
I then open the 'Philips LPC2000 Flash Utility V2.2.3', select "LPC2138-12,000Khz-9600 Baud-Erase-Filename-Voice.hex-Upload to Flash". The device then appears to program normally but no audio can be heard except an initial 'pop'. The lights still run (as per the program).
I checked the serial output in Hyper Terminal and it reads:

MCB2130 WAVE AUDIO PLAYER

Playing Block 1
File information:
=================
File Size: : -1
Format identifier : 65535
Number of Channels: 65535
Sampling Rate : -0001 Hz
Bytes per Second : -0001
Sample Alignment : ERR
Sample resolution : 65535

After checking the example on the Keil website I know these values are wrong.
It should read:

MCB2130 WAVE AUDIO PLAYER

Playing Block 1
File information:
=================
File Size: : 61754
Format identifier : 1
Number of Channels: 1
Sampling Rate : 08000 Hz
Bytes per Second : 16000
Sample Alignment : WORD
Sample resolution : 16

Although, the serial output does continue to update with each new block (so the program is actually running).
Both software versions and both boards give me no audio (except inital 'pop'), lights changing slowly (as per the program) and the serial readout above.
I have successfully downloaded the other sample programs, it's just this one I am having trouble with.
Any advice would be most welcomed.

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