Help And Critique, US-122 recording and track critique Options

[Dimora]

Hello hapless reader.

I have just finished a track for a video game that I am scoring and I am ever so slightly unhappy *dripping with sarcasm* with the quality of the recording. Let me run down my set up.

Mac G4 400Mhz
OS 9.2.2
Digital Performer 3
MOTU micro express
Roland JV-1010
Triton LE
Alesis Multi Mix
Tascam US-122

The process:
After I sequence everything, I record it on an Audio track in DP3. From there, I bounce to disk (usually aiff). When I am listening back to the recorded audio through the Tascam (pre-bounce) the sound quality is excellent, but after I bounce to disk, the sound is muddy and rather quiet.

I am relatively new to recording and mixing, and I've tried adjusting gains and levels but to no avail. It simply lacks clarity. I am pretty certain that the problem doesn't lie with the Tascam (because recordings of smaller ensembles sound wonderful) so that would leave me to think that the track gets "dirty" during the bounce. It also sounds a little "hollow" on the left side of the mix. Is that possible? Am I doing something wrong? Are there settings in DP3 that will allow me to specify preferences when bouncing?

You can take a listen to the track here (direct link to the file)

http://no_music.tripod.com/Gnome_Gnation_M..._Main_Theme.mp3

I'd love any criticism on the trackas well!

Thanks!
Clo