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<blockquote data-quote="dm15644" data-source="post: 31992">Ok, solved it. I loaded a dvr-ms file into Graphedit and indeed it used the Default DirectSound Device. When I manually changed that to the Default WaveOut Device and played it in Graphedit, the amp switched to Dolby Digital!Now the *only* problem was to tell Media Portal to use the Default WaveOut Device instead of the Default DirectSound Device. This didn't work with the RadLight Filter Manager, it would tell me &quot;Cannot change merit&quot; when I tried to do so. I also noticed that both the Default DirectSound Device and Default WaveOut Device where related to the single file &quot;quartz.dll&quot;, maybe that was part of the problem?While playing around I unregistered and registered quartz.dll. After that the graph in Graphedit looked slightly different: It now used the ffdshow audio recorder. Can't remember what audio decoder was used before, but it was something else. Miracously the Default WaveOut Device was now also used. Maybe the reason is that I set ffdshow to use the Default WaveOut Device only. In MediaPortal however I still use the MPEG/AC3.... decoder.&nbsp; But anyways now I also get AC3 when watching TV in Media Portal!Conlcusion: I have no idea how exactly I managed to make the system and Media Portal use the Default WaveOut Device but now it works. Probably someone knows how to do this in a more goal-oriented way.../jayrock</blockquote>

[QUOTE="dm15644, post: 31992"] Ok, solved it. I loaded a dvr-ms file into Graphedit and indeed it used the Default DirectSound Device. When I manually changed that to the Default WaveOut Device and played it in Graphedit, the amp switched to Dolby Digital! Now the *only* problem was to tell Media Portal to use the Default WaveOut Device instead of the Default DirectSound Device. This didn't work with the RadLight Filter Manager, it would tell me "Cannot change merit" when I tried to do so. I also noticed that both the Default DirectSound Device and Default WaveOut Device where related to the single file "quartz.dll", maybe that was part of the problem? While playing around I unregistered and registered quartz.dll. After that the graph in Graphedit looked slightly different: It now used the ffdshow audio recorder. Can't remember what audio decoder was used before, but it was something else. Miracously the Default WaveOut Device was now also used. Maybe the reason is that I set ffdshow to use the Default WaveOut Device only. In MediaPortal however I still use the MPEG/AC3.... decoder. But anyways now I also get AC3 when watching TV in Media Portal! Conlcusion: I have no idea how exactly I managed to make the system and Media Portal use the Default WaveOut Device but now it works. Probably someone knows how to do this in a more goal-oriented way... /jayrock [/QUOTE]

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