I wish SONAR had a 'Duplicate' command like you have in FLStudio or Cubase where you just select a region & press ctrl+B to duplicate that region over and over again. Now this can be done in Sonar using copy - paste but having a dedicated duplicate command makes it so much faster (especially if you are arranging samples on an audio track)

Paste Special lets you specify any number of repetitions. For example if you have a four on the floor kick that lasts for one measure, copy it, place the Now time at the end of the meausure, and specify 100 repetitions or whatever when you paste special.

For audio if you wish to repeat an audio clip turn it into a loop. Once a loop you simply drag out the end to cover as many measures as you like.
 
With MIDI there is the Pattern tool that lets you "brush" the MIDI notes on as often as you like.   

John
For audio if you wish to repeat an audio clip turn it into a loop. Once a loop you simply drag out the end to cover as many measures as you like.

Great point, especially because if you're turning audio into a loop and not changing the tempo, there won't be any change in sound quality. 

Groove clip looping is also a useful tool!
 

siordanescu
Groove clip looping is also a useful tool!
 

Right and I think I covered that.

Thanks every body for your replies.
1.Yes...it can be done with copy & paste but that requires you to shift your attention from what you are thinking(a musical idea)  to the 'paste tool window' & that is a little hindrance to your focus.
2.Duplicate tool is not needed for loops because loops (groove clips) can be stretched as much as needed. And using midi for arrangement is not as flexible as arranging samples on an audio track especially for electronic music. Say, you need to add an extra reverb to nth number of kick, or stretch the nth number of snare for a special effect, or reverse just a particular sample, etc etc...
Duplicate tool is particularly useful when you arrange samples on the audio track itself (to form a 1 bar rythm) and then duplicate it , add some variation to some samples, then duplicate...add variation & so on. Thats's a different type of workflow used by many electronic musicians today. That's the reason 'Duplicate' tool is provided in many modern DAWs.
 
 

https://youtu.be/NiSJLa6u50E?t=25m18s
 
check this out... "Masters at Work: James Wiltshire (Freemasons, Beyonce) Mixing & Arranging a Drum Track - Pt2" @  25minutes & 18seconds

There's also the under-used and under-appreciated (though also arguably somewhat under-developed and not living up to its potential) Matrix view, where you can set up looping clips and sections and record a performance of any combinations you like back to the timeline in real time, even mapping clips and segments to a keyboard or pads if you want to trigger them without mousíng around frantically. Yes, it's a different way of working than what you're describing, and of course Ableton is still a deeper platform if you're really looking to compose in that manner, but it is in fact remarkably powerful and flexible if you give it a chance and get to know it a bit...

miracledee
Duplicate tool is particularly useful when you arrange samples on the audio track itself (to form a 1 bar rythm) and then duplicate it , add some variation to some samples, then duplicate...add variation & so on. 

 
It sounds like you're describing successive duplications rather than duplicating a clip multiple times with a single command. If that's the case, I don't understand how what you describe is different from bouncing the samples to create a clip, then ctrl+drag to duplicate the clip for modifying, followed by successive ctrl+drag/modify operations. Ctrl+drag takes the same number of keystrokes as Ctrl+B.