Not sure if this is the right place to ask, but here goes anyway. 
 
If you look in Cakewalk Content\Loops\Loopmasters\WORLD AND JAZZ\INDIAN SESSIONS VOL1-2 and listen to some of the rex vocal samples in that folder, they sound very glitchy as if the "rexing" has been done very badly. Is that the case? I really want to use a couple of those vocals but they sound so broken. I managed to fix one of them up a little in Audition but not very well, and the other one I want to use just isn't working at all. 
 
I don't know anything about rex files, but is the audio screwed beyond repair in these? 

Hi, sharke. Are they glitching at their native tempos? If not then (as you probably know) it'd be more a case of bad splits. I don't know if Rex files are one of the ones that can be edited in the  Loop Constructor (pretty sure they are but it's easy enough to convert them to the proper format).
 
It's just a matter of dragging them into the LC and and manually moving/adding splits so they appear right at the transients. Then they'll stretch properly without artifacts (or less of them anyway).
 
If they aren't playing properly at their native tempos then yeah... that's different. Admittedly I haven't spent a lot of time working with the loop content but they mostly seem alright at native tempo BUT some of the ends/starts are a little crunchy. That, in theory, could be corrected with some fades processed into the files.
 
Again... you probably already know all this (better than I do). Posting just in case you overlooked it.
 
Cheers.

Yeah they're glitching at their native tempo. And if I bounce them to a normal audio clip they still sound glitchy. I looked for the official sample pack they came from online and the company has a demo track featuring some of the samples and as far as I could tell from that they're not glitchy.

I'll give them a listen if I get a chance later. If not remind me.
 
Currently got some blues rock on the brain so don't wanna crush the flow in it's infancy.

The REX editing is...uh...never mind. The solution is:
 
1. Open the file in Propellerheads' ReCycle
2. Set the Stretch parameter to 0
3. Delete or mute all the transient markers
4. Save as a standard WAV file.
 
If you need to time-stretch it, use SONAR's acidization option, which works very well on these kinds of files if you know how to acidize properly. 
 
Unfortunately the markers are embedded in the REX file, so even though the transient markers show up in SONAR's Loop Construction window, you can't edit them as you can with acidized files.
 
Generally REX files work for percussive sounds; anything else is best done with Acidization, although it can also do percussive sounds.

Geist will open rx2 files. For the percussive ones, you can use Geist to pull all samples into a kit and fire them as you see fit without issues.
 
However, for the vocal ones, some parts are salvageable, and others are not. Using the one that you posted in the other thread as an example (KV_KULDEEPAN_M_PHRAS_5_D_85.rx2), in addition to the pops/clicks on that which are fairly easy to fix, there is also transient "pulsing" between the slices (almost like the slices are intentionally pinching to zero amplitude before the next slice marker). That first long section that is sliced into 3 slices should all be consistent volume, but was pinched when sliced. I do not know a way to repair that that one (but possibly the Propellerheads' ReCycle might work... but that does not seem "stretched," but rather "pinched").

I haven't check the files yet myself but if what mettulus is describing is what's happening maybe some splitting then stretching then x-fading to heal would work? Then properly acidize them.
 
A lot of work but if the samples are worth it for the project it's exactly the type of OCD crap I'd pull.
 
@Craig... Good info. Thanks.

mettelus
However, for the vocal ones, some parts are salvageable, and others are not. Using the one that you posted in the other thread as an example (KV_KULDEEPAN_M_PHRAS_5_D_85.rx2), in addition to the pops/clicks on that which are fairly easy to fix, there is also transient "pulsing" between the slices (almost like the slices are intentionally pinching to zero amplitude before the next slice marker).

I tried to repair this file using the procedure referenced previously with ReCycle, and it works fine. When you hear things like "pulsing" between slices or echoes, that means the Stretch control in ReCycle was set too high, with the tradeoff being that if you set it too low, then the transition between slices becomes jarring.
 
REX files are really not meant for this kind of material; acidization is.

Sorry if I'm misunderstanding, but as this is essentially not free content but part of the Sonar package, shouldn't this work be done by Cake and delivered in an update? It seems like they just made a mistake.

Sanderxpander
Sorry if I'm misunderstanding, but as this is essentially not free content but part of the Sonar package, shouldn't this work be done by Cake and delivered in an update? It seems like they just made a mistake.

AFAIK the Loopmasters stuff was developed by a third party and included as bonus content. It's also quite old now (I got it with X1... it might even predate that).