MyDVD+MPA=AC3 / MyTV+MPANo AC3?

[gemx]

MediaPortal Version: Current SVN + TVEngine 3
MediaPortal Skin: Prject Mayhem III
Windows Version: Windows XP Prof. SP2
CPU Type: AMD Athlon XP 64 3500
HDD: 160 GB
Memory: 1 GB
Motherboard: Asus A8N-VM-CSM
Motherboard Chipset: NVIDA
Motherboard Bios:
Video Card: on board
Video Card Driver:
Sound Card: on board
Sound Card AC3:
Sound Card Driver:
1. TV Card: Technisat SkyStar 2
1. TV Card Type: DVB-S
1. TV Card Driver: latest BDA
2. TV Card: HAMA USB DVB-T
2. TV Card Type: DVB-T
2. TV Card Driver:
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec: MPV
MPEG2 Audio Codec: MPA
Satelite/CableTV Provider: Astra 19.2 E
HTPC Case: ACCENT HT-100
Cooling: Aqua Computer water cooling
Power Supply: Be quiet Straight Power 350W
Remote: Logitech Harmony 585
TV: Telefunken 80cm
TV - HTPC Connection: S-Video

First of all - excuse me for the strange title. I thought this would be the best to explain.
I use TVEngine3 with daily updated SVN snapshots.
If i play DVD with the MPA aiudio codec i get AC3 Dolby Digital II and 5.1 (depending on the DVD).
If i use MPA with the same settings as in MyDVD and watch TV i only get PCM sound even if a channel surely broadcasts AC3 sound.
Switching the audio tracks has no effects besides a short stutter.
Has anyone any ideas what can cause such behaviour?

[Caramba69]

I have the same problem! Do you have any solutions?

[gemx]

No, i am afraid not
But it seems as if more and more users experience such problems.

[gemx]

Got into the problem a bit deeper with graphedit. If i switch to the AC3 track and connect to the graph via Graphedit, the output of the MPEG Multiplexer and of the MPA codec are both PCM.
Don't know where to search now

[gemx]

Ok, got a bit further.
Checked the TVEngine3 stream with VLC and there all 3 contained audio streams (PCM German,PCM English, AC3 5.1 German) were selectable and working.
So there must be something wrong in Mediaportal itself.