I use this.  I play whatever while verbally syncing, then start tapping the space bar in sync with voice.  Not sexy or hands free, but it works.
 
I would love to be able to fire up the metronome in Sonar while the transport is stopped.  Would be very handy to do as the OP described.
 
BTW, while we're talking metronome, whatever happened to being able to choose wav files for metronome sounds?  Or did I dream that?

BobF
BTW, while we're talking metronome, whatever happened to being able to choose wav files for metronome sounds?  Or did I dream that?

Not a dream, click on the Metronome button in the toolbar for one-click access, or go to Preferences.
 

BobF
I use this.  I play whatever while verbally syncing, then start tapping the space bar in sync with voice.  Not sexy or hands free, but it works.
 
I would love to be able to fire up the metronome in Sonar while the transport is stopped.  Would be very handy to do as the OP described.
 
BTW, while we're talking metronome, whatever happened to being able to choose wav files for metronome sounds?  Or did I dream that?

Thanks for the link,
I like the idea of tapping out the tempo. I'm going to write that it in my metronome too. It's not like i'm stealing somebody guitar licks<g>