Plagued by no audio from Boss BR 800

Welcome to the forum.
Have you downloaded and installed the latest drivers for the BOSS and your operating system?
http://www.bossus.com/gear/productdetails.php?ProductId=1068
How do you have the BOSS connected to the computer? If you're trying to record a song that's on the BOSS into SONAR, you might want to look at the File Transfer function of the BOSS. Or connect an audio cable from the BOSS to the line in of the computer sound card and record in real time, 1 or 2 tracks at a time.
The BR 800 is an audio interface as well as a recorder, so you should be able to record into SONAR in real time, through the BOSS.

OK, I finally figured out what I had done.  I added an audio track and set the input source as the BR800 stereo channel.  However if I try and use MIDI it won't pick up the audio from the BR800.  

Maybe by design?

Drac

Hi Everyone,
I am new to the forum. I just purchased  the boss br-800.
I am sure this is a case of my making some simple mistake or oversight .
I am running keyboard out to Br-800 in and getting strong signal on the unit track/ master meters (note:with rhythm fader down).
I then press "record/play" everything seems fine .
When I press play for playback, there is no signal output. my track play and record lights are lit.
At this point this is driving me nuts. I would be gratful for any quick help. thanks for your time and consideration.

I find this part of the Sonar forums kinda 90% dead end threads, don't you? Look's like the original OP never returned. 
I have answered a few questions here and the OP's never come back. 
The above post is probably here because he Googled Boss BR 800 and this thread was dug up. 
 
mtgbuyer1 you'll need to read your users manual, nobody here owns your device so how can we help you? This is a forum for helping people with Sonar software. Boss and Roland have very good manuals, most available on line to download as a PDF.