You're going to have to be more specific to get any meaningful answers on this. What kind of sound system are you using, and how is it hooked up? Are you trying to bitstream multichannel lossless audio to a home theatre receiver with an HDMI cable? Is the playback software supposed to be decoding it to multichannel PCM? Multichannel analog? Are you downmixing it to stereo? More information is required. Please be as specific as possible so I'll have more to go on.

Also keep in mind that the difference between DTS at 1509 kbps and the full uncompressed track is going to be a subtle one. Unless your analog gear is of sufficiently high quality, it will be very difficult to tell them apart in a blind test. You don't have to feel like you're missing out too much by listening to the core DTS track, because it will still deliver the soundtrack quite excellently.