Hello!  I've been looking and trying and I can't find the answer on my own, very possibly because I lack the terminology. 
	- Anyway, I downloaded and installed Sonar just a couple of weeks ago.  I have some MIDI files I had made some years back using "MusicTime" (that was way back in 1997, Yikes!); I can load them into "Crescendo" (a free notation program) and get them to play, but they sound *horrible*.   
	- Well, I can also load them into Sonar Free; and I did find out via the Forum that "MIDI tracks don't play any sounds" because they're only instructions.  OK, I can understand that, and that there's some sub-program in Crescendo (and similar) which "translate" the Midi Channel/bank/patch/description/whatever into sounds (even though the sounds are awful).   
	- Oh, in case it matters, my MIDI input is set to "Virtual Controller" because I don't have a USB keyboard/"input device"...I looked at a few "budget" ones but don't want to spend my fixed-income dollars on something that might not even work with the software and so on... 
	- ANYhoooo.... so, what I can't seem to find is, How can I link/connect/match/insert/whatever those MIDI in Sonar?  I have to assume that whatever the other programs are doing automatically, has to be done "manually" in Sonar because there are so many additional "sounds", and ESPECIALLY, better *quality* "sounds", available.  But I can't for the life of me find out how to use the MIDI track to "talk to" an instrument/"sound"/"audio" track to "tell it what to do". 
	- 
	- As I mentioned, I'm a total beginner with the whole "DAW" thing, but I'd really like to get my older compositions to where they sound at least *passably* decent, and even work on some new ones.... 
	- I took a screen shot of what I've got going with the MIDI file but it's pretty huge, so I'll only try to post it if it will clarify anything... 
	- 
	- Thank you all for your collective patience! 
	ADDENDUM: 
	I did find this https://legacy.cakewalk.com/Support/Knowledge-Base/2007013179/I-cannot-hear-MIDI-playback 
	so now I can at least hear the MIDI playback, but I still hate the "tinny" sound and would love to have something like the "BBC Full ORchestra" sounds instead, so still trying to figure out how to get the MIDI *instructions* to play through a VST3 Instrument..... 
	- Thanks again!