That said, there are a variety of products on the market that may accomplish what you're after - from membranes alone (like WhisperMat from Protecto Wrap) to to membranes that use gypsum underlayment topping (like Maxxon's Acousti-Mat)... just be sure to check for compatibility with the in-floor heating.

You aren't cash strapped so don't dip into retirement accounts when you don't need to.  

Are there any bolts or straps holding down the bottom plate anywhere around the perimeter?

Floor Mats, Floor Runners (long drop cloths work well), and Disposable Shoe Covers (to protect the flooring). 5.

Dont want to have to complete Sch L or M at tax time. 

I like buildings that are not next to a laundry mat, but if you are, just price your laundry a little lower and you'll get the business, especially with nice machines.    

If you live in a big city or even the small towns, laundry mats, grocery stores and some community offices have bulletin boards where people post things up they are trying to get rid of.

If the OP is strapped with car payments, an already large mortgage, low reserves, etc, it's unlikely that he can go this route. :)

I assume it has two mats of rebar, one top, one bottom of the slab.

First buy and hold needed more reno than I estimated, which left me a bit strapped .