Vista supports output to multiple sound devices and even multiple sound devices on the same sound card if the hardware and drivers support it. For example, right now I am listening to both the SPDIF (hooked up to the receiver) and the 'speakers' device (PC speakers) simultaneously. I’m using Winamp with the ‘Multiple Output Plugin’. The issue is the Windows Media Player engine and thus Media Center. Really limiting configuration options. It is that team we need to be pushing. I think like many things Vista they went amok with security/DRM.
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