I have an X-Fi Prelude, and I recently discovered that it doesn't accept anything through the digital input other than PCM signal. So, my question is this, is there any sound card, Auzentech or other wise, that DEcodes Dolby Digital 5.1 or DTS 5.1 and accepts it on the digital input? I thought that the Prelude might, since it ENcodes it and outputs it through the digital out to an external receiver, but alas, input is PCM only. Any help? Thanks.