I'm sure when this happened (last SONAR update?) but recently when I use Melodyne (basic version that came bundled) and I move or click on a blob, it doesn't play the sound.  It did previously.  Any thoughts on why or has anyone else had this issue?

Is echo input active on the melodyne track? Try toggling that.

yes, I can echo that input echo should be on . . . and also sometimes there is a need to turn the Global FX button on and off to hear the blobs when editing.

I tried enabling Input echo on the track and also the FX bin on/off as stated above and neither made a difference .  When I select and hold the Blob I can see in the upper left of the edit window that it appears to play (the area next to the compare icon shows what appears to be a playback level meter).  I've never had to mess with the echo input or FX bin in that past when it worked.  I'm guessing its something simple that got turned off..... any other thoughts?

You mention toggling the FX bin . . . but are you toggling the "Global" FX button, the one in the Control Bar ?
That's always "fixed" it for me.