I want to try using my computer as a HTPC. I'm looking for a soundcard for the following setup: Dell Dimension 8200 with Windows XP SP1 Windows Media Player 9 for CD, WMA Lossless and MP3 playback DVD playback with Dolby Digital and DTS (I haven't decided on a player) Possible HDTV card Onkyo TX-DS898 receiver I'd prefer to use an optical connection between the computer and receiver to keep them electrically isolated as much as possible. I want a sound card that automatically switches between PCM and Dolby Digital or DTS (I've read that the Hercules Fortissimo cards must be reconfigured and the computer rebooted to switch audio). Is there a sound card for that will provide 44.1 KHz PCM output with my hardware and software? If not, will upsampling to 48 KHz make an audible difference? Are there any other issues I should consider?