DTS movie + Creative X-fi soundcard

[ilomambo]

• I experience the following problem, for which I think I exhausted all checks I can do by myself.
• I have an HTPC with X-Fi sound card which outputs 5.1, directly through 6 connections into my amplifier (not through SPDIF)
• I also own the DVD of the movie "Fight Club" which has a DTS 5.1 audio track.

When I play the DVD on my PS3 I can hear the DTS 5.1 clearly over all the speakers, this is my reference.
I downloaded the movie in 720p+DTS and played it on BSPLayer; even though the audio menu indicated DTS 5.1 I could not hear the rear channels.

Question #1: What could be the problem?

• I did try to change manually the Audio decoder from System Default to AC3Filter and then to ffdshow and it did not solved the problem.

Question #2: Is there anywhere a test file for DTS which outputs each channel in turn?

• I want to state that I do no have the possibility of output SPDIF, since it requires a special hardware connector from Creative Labs which I don't have.

[ilomambo]

Problem solved
It turns out the X-fi sound card changed its output mode from 5.1 channels to Headphones (don't know why, this is another problem to solve, not in this forum)
I restored the 5.1 channels and the sound is fine, coming out from all speakers.