[Goga777]

you can find those option in guisettings.xml

Code:

<audiooutput>
        <ac3passthrough>true</ac3passthrough>
        <audiodevice>custom</audiodevice>
        <channellayout>7</channellayout>
        <customdevice>digital</customdevice>
        <custompassthrough>digital</custompassthrough>
        <dontnormalizelevels>true</dontnormalizelevels>
        <dtspassthrough>true</dtspassthrough>
        <mode>1</mode>
        <passthroughaac>false</passthroughaac>
        <passthroughdevice>custom</passthroughdevice>
        <passthroughmp1>true</passthroughmp1>
        <passthroughmp2>true</passthroughmp2>
        <passthroughmp3>false</passthroughmp3>
    </audiooutput>

[Goga777]

sorry, I was wrong

My Home Cinema system doesn't support aac, and I couldn't listen through passthrough any stream in aac format

My sound card doesn't support sample rate 44100 - that's why I couldn't use passthrough for any streams with 44100 rate

My Home System doesn't support 48000 for mp3 that's why I couldn't listen anything with mp3 48000 streams

Today I can listen only ac3 and mp2 48000 streams through passthrough

[Goga777]

I use the Denon AVR-1909 with MP3/WMA/AAC restorer. XBMC running via Apple TV and HDMI.
Will add to feedback.

any feedback ?
did you able to listen MP3/WMA/AAC @44100/4800 files through passthrough ?