DVD audio is really low and with Alsa:surround51 no audio when playing Live TV

[Macbeth]

Hi all,
I'm using mythubuntu and after a lot of work I finally managed to get my own mythtv work.
I need to solve 2 issues... both related to audio.

The first problem is that the DVD audio is really very low compared to my videos , live TV recordings or music (about 50% softer). I do different try with alsamixer, but without find any solution (every channel appear to be settled correctly).

there is a special option to increase the dvd audio output of the internal player ?



The second question is harder.
I want use my computer to do the decoding of DTS and AC3 audio info, because I don't have any external decoder (I'm using a cheap 5.1 kit from logitech and embedded 7.1 sound card).

For this reason I'm using the Alsa:Surround51 audio output in general configuration of my mythfrontend with max decoding channels = 5.1

For a strange reason when I use this audio output the Live TV audio stop working (music and videos are ok)... is a frontend issue, because if I record something and I change the audio output to Alsa:default I can listen the record.

The TV card capture the audio with the line-in input of my sound card.

Thanks to anyone that can help me.

[Macbeth]

Thx for Help guys

Ok i tryed to remove alsa.conf.... but audio stopped working... so i reloaded my old alsa.conf and changed the max decoded audio channels inside mythtv from 5.1 to stereo and this was enough to fix the problem with live tv.

About the dvd low volume output i found this :

http://ubuntuforums.org/archive/index.php/t-230837.html

I don't know if this can be fixed ... maybe i will try with an external player