If you want these buttons in X1/X2 right now, check out the Duckbar program which gives you a customizable toolbar (buttons) as well as extensive control of the colors and "other" appearance of all things Sonar...
This is not a Cakewalk program and it is a free utility made by a talented and gracious Sonar user....
You can find more info here:
http://www.sonarmods.com/forum/index.php Tho I use keyboard shortcuts most of the time, there are a few I often find handy to have on a button so that depending on the various hand needs (playing an instrument or the likes) I can access many commands graphically which Sonar itself no longer offers <sad>...
Check it out.... Easy to use and works well!
Keni