I haven't successfully done it yet ,but there is a way to match Sonar to that beat. I have a complete tune done to a guy playing a highhat on his kbd. In Sonar, you can match the click to that highhat and you will see the bpm vary with your beat. I have to watch the Groove 3 video again, as I missed something and it didn't work. It is supposed to work. I am doing the drum loops, so matching to whatever I get would be cool!!

My favorite is EQing a track to perfection, and sitting back listening in satisfaction to my tweaks and improvements.
Then later finding out the EQ was bypassed the whole time.

I have a small passive volume control between my audio device output and powered speaker inputs. The number of times I start troubleshooting "no audio" issues then realise I haven't turned up the volume. Doh!

TPayton
My favorite is EQing a track to perfection, and sitting back listening in satisfaction to my tweaks and improvements.
Then later finding out the EQ was bypassed the whole time.

hahaha ....... that just made my day . 
 

After blowing my ears to smithereens a few times, I finally learnt how to disable the master fader recall on my digital desk...

 

Booting up my system and load in an big project, and to my big horror then getting terrible drop-outs and crackling sound as if my interface is completely breaking down...
 
Then suddenly realizing I have set the buffer on my interface as low as possible the last time I used it, because I did an simple record session and wanted to keep latency as low as possible... and forgot to restore settings to normal..

I am an idiot! 
 
I have done almost everything that has been mentioned thus far!

Religiously plug in everything, set up that perfect drum beat, try in vain to record your awesome new guitar riff: Silence.  Follow every cable, every buss, every effect.  Record again.  Silence.  Swear loudly, then check the volume knob on your Jazzmaster. Dammit.

Now, it got me :-)  it took me a loooooooong time to figure how to convert a recorded MIDI part between double, normal and half time because I wanted double tempo settings but same sounding playback ...
 
I've been stretching audio clips ... but how could I know that MIDI clips work the same ... Sonar is way too consistent and intuitive if you ask me ;-)