It seems that our Realtek chips only support 48 kHz. So if you signal at any other sampling rate, the chip resamples it (badly, apparently) to 48 kHz. That's why it works when the signal is first resampled to 48 kHz.
You can test your system with this simple program:
http://ac3filter.net/files/download/spdif_test.exe
Simply run it and click Test.




Originally Posted by sum1

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