Preserve Audio in Time Remapping / Time Warp

You failed to understand the original question. Several workarounds and solutions have been attempted to explain that which you explain here by various means, but the original question was regarding RAMPING audio speed changes.

IOW with video, you can use ramping, meaning the speed GRADUALLY changes from one speed to another over time, you do that by "splitting" the keyframe on your video, or by adding keyframes which you can drag up and down, which causes the speed to gradually change over time.

This is not possible with audio, which you have to change indefinitely to a specific speed for the entirety of the clip.

not really hilarious but a fact of life.  Every decision made when doing the original programming impacts what's possible down the road unless you completely rewrite the program...  Both Adobe and Avid made the decision to do that when they needed to update their NLE's to work efficiently with new hardware and operating systems.  Apple made the decision to abandon the fcp interface and create fcpX which most fcp7 users hated...   so just because  new program can do something, doesn't make it simple if even possible when you're building on years of coding.  

If you're having so much trouble, maybe you should explore other options...  This may sound snarky, but that's not my intention..   You'll probably find just as many issues in the alternatives, but not necessarily the same ones...  software authoring is complex and decisions that are made early on can create limitations many years down the road...   Eventually, most pieces of complex editing software are rewritten from the ground up to take advantage of advances in the OS and in the hardware but this is often at 20 year intervals and usually creates new issues.  Look at apple, throwing out the baby with the bathwater when they ditched fcp7...  That said, you can try blackmagic design's davinci resolve.  There's a free version that has almost all the features of the paid version which is a very reasonable $300 for a perpetual license...  

Yes, it would be very useful. Really needed it yesterday for a project where a subject was showcasing their work place enviroment and I needed to speed up through a few bits then return to normal speed and continue along with the audio still in sync. 

It's funnier that you make fun of people asking for a feature that probably didn't exist in 2009. Almost as funny as me replying to you four years later.

I can think of at least a dozen movies off hand that use time remapping, and they certainly didn't just dump the audio... If you're editing a video of someone talking and you slow it way down, why would you want their voice to continue at normal speed and get out of sync with their mouth?  Whether or not the audio would need some tweaking at the end is besides the point, keeping it's duration and easing as close to the videos as possible would only make sense unless you had explicitely locked or unlinked the audio from the video.

Did anyone ever find an easy way to do this?

[Edited for content]

That definitely works for clips with few and simple changes in speed, but what can I do about gradual changes? Slicing up an audio track into 10 parts to provide the illisuion of a gradual change in audio speed doesn't sound fun. There has to be an easier way.