"Clock" sound when braking..

I hear and main FEEL on my feet a "Clock" sound when braking, releasing brake, accelerating, decelerating. This is very confusing I recently changed my axels(not Toyota brand), I recently changed my front struts, springs but I forgot( because I wasn't familiar with it) the top strut mounts. This sound/feel has gotten worst, before I didn't hear it all the time but now I hear it almost always at low speeds of about 2MPH-25MPH or so, but I don't really feel anything at high speeds. I also hear a "clock", "clonk" kind of sound when going over a speed bump (only heard in the front), I wonder if it's heard the same way sitting on the passenger side.
I've read forums that say these are symptoms of a broken engine mount, my mechanic says no way it's a broken mount "rare to happen to a Prius." The vehicle has 179,500 miles and it's a 2004.
Someone please help, all these symptoms I've experimented in the vehicle lately are driving me nuts.
Thanks!

 

How would you suggest the CV's to be checked, like what would the procedure be to identify if their bad? (I had them replace about 2 months ago and those were bad because they made my ABS light come on, and I think there was something loose that made a metal binding noise when hitting potholes/cracks.) so I changed those with these, how can they be the problem again, these are a diff brand a bit more reliable.
Also if I'm stopped not moving but on "D" and pressing on the brakes lightly and turning the wheel I hear a noise like from underneath the suspension like a metal is rusted (why I think it's the old strut mounts/plate).

 

I will try this when I get back the car today, and I'll report back,
thank you!

 

Thanks for the input!
Yeah I replaced the original ones and the boots were in perfect condition, but they gave me symptoms like vibration at higher speeds 40-60MPH, clank when turning left or right. Those are typical symptoms of bad Cv joints, in my case. After the first repair it was just a weird loose metal noise when driving over cracks, and the ABS ring wasn't making correct contact with the ABS contact so it made my light go on. Returned those got new ones put in perfect, then replaced my struts, but forgot to order the strut mount/plate that goes on the top so I still have the old ones in. But as time passes there's this clock noise that is heard more and more when accelerating (not just turning), DEceleratting, baking up (specially on a hill). All these things make it weird for me to determine or believe my CV joints are bad (ps. My ABS light isn't on anymore after this new pair of CVs were put in). I'm thinking its the strut mounts.