[Solved] How to listen notes by dragging??? (scrub tool) Please help me...^.^)

Hey you too.
A lot has changed since the Pro Audio days. That was first DAW I learned on back in the late 90's early 2000's.
The learning curve is a bit extreme when jumping to Sonar. so if you are being productive, that's a plus.
In my opinion, the Piano Roll View has come light years compared to what it was in Pro audio 9.0.
I mostly specialize in Digital Audio. Most of my paying jobs comes from Conversation work.
I convert old 4 , 8 track/Multi-track cassette, 2, 4, 8 track/Multi-track Reel to reel to Digital. So people can import their Multi-tracks in to a DAW.
But I also write/record plenty of new projects Working in the 80% Audio, 20% Midi. Now back to Navigating.
 
Navigating in Sonar, there's a few other hidden gems that are not documented as some of the more frequent used ones.
For example:
You can use the CNTRL+ PAGE UP / CNTRL+ PAGE DOWN keys to move 1 beat on the Timeline.(1:01 /1:02,exc)
You can also use the CNTRL+SHIFT PAGE UP / CNTRL+SHIFT PAGE DOWN keys to move between Markers.
 
And when your ready to dive in to Keyboard shortcuts, open up Preferences in Sonar and there is a whole section dedicated to Shortcuts. Thus allowing you to create your own. For example, you can bind a set of key (what I used to do)
7- for REW and 9- for FF.
 
While the Transport is rolling, if you hit SHIFT+SPACE BAR the Nowtime will stop at that exact spot
(Vs. going back its original position.)