Premiere Pro CS5, MPEG2.ts with multiple languages & Handbrake (MAC)

Hi there,
I've got a recording from my PVR that is a MPEG2.ts file that has multiple audio languages embedded in it. When I put it through Handbrake, I can choose and select which language tracks I want to keep and then export it to whatever format I need to edit in either Premiere Pro/Final Cut Pro. This can take a while to process... :(
I noticed when using Premiere Pro CS5 that I could import this .ts file directly into it (unlike Final Cut Pro), but what I found is that I can't seem to be able to separate and remove the unwanted language tracks, as all the audio shows up as being compressed into one audio track. I've tried:

a) Switching off Left & Right audio channels independently to see if it leaves me with the correct language track. Nope.
b) Passing the audio to Adobe Audition to edit out the language track. No luck as it's all merged into one.

So my question is, is there any way in Premiere Pro CS5 that I can select the audio language I want, just like I do in Handbrake, and then continue editing the clip, without having to go through the hassle of pre-processing it through Handbrake to remove the unwanted language tracks ?

Thanks