Matthias Saou wrote:
> 
>  * This means re-encoding *everything* to AC3 on the fly? 2.0 music too?

Correct

>  * What kind of CPU usage is to be expected for a typical 5.1 signal?

2 to 5% on a Core Duo 1.6 GHz so barely noticeable.

>  * What about other formats like DTS? (please forgive my ignorance)

DTS would be decoded and encoded back to AC3.

> It seems pretty obvious to me that if my amplifier is able to accept
> the raw stream already contained in my movie files, then sending it
> as-is is the optimal and theoretically not-so-hard solution, which many
> video players already implement.

Yes, the player needs fixing.

Julien

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