Reference Guide

916
Troubleshooting
SONAR Can’t Find the Wavetable Synth or MPU401
4. Reopen the Pro Audio file in SONAR. If the volume sounds correct, save the file in SONAR.
If other Pro Audio 9 files were opening correctly in SONAR, change the VoMethod=n line in
SONAR’s Aud.ini file back to what it originally was, and re-save the file.
More Frequently Asked Questions.
SONAR Can’t Find the Wavetable Synth or MPU401
Follow this procedure:
1. Open the Audio Options dialog (Options > Audio command), and on the Advanced tab, check
the Always Use MME Interface, Even When WDM Drivers Are Available option.
2. Click OK to close the dialog.
3. Close SONAR and reopen it.
4. Use the Options > MIDI Devices command to open the MIDI Devices dialog.
5. Highlight the Wavetable synth and/or the MPU401 (or whatever synth your sound card contains).
6. Click OK to close the dialog.
Now your sound card synth and/or the MPU401 should appear in the drop-down menus of the
Output fields of your MIDI tracks.
I Get an Error Message When I Change a Project to
24-bit Audio
Some audio devices, especially USB devices that use WDM drivers, can not operate in 24-bit mode
unless a variable in SONAR’s Aud.ini file is set to 1. The variable is Use24BitExtensible=<0 or 1>,
which goes in the [name of your audio device (‘n’ in, ‘n’ out)] section.
For more information, see AUD.INI.
More Frequently Asked Questions.
Bouncing Tracks Takes a Long Time
By default, SONAR uses a buffer for bouncing tracks that is the same size as the Mixing Latency
value that you set in the Audio Options dialog. But with some projects, especially ones that use
certain soft synths, the bounce buffer needs to have its own value. You can set the value in the
Aud.ini file with the BounceBufSizeMsec=0 line in the Wave section. At a value of 0, the bounce
buffer is the same size as the Mixing Latency value that you set in the Audio Options dialog. You
can set the bounce value to 100, or some value between 0 and 350 so that the bounce buffer will
use a more efficient size for bouncing, which has different requirements from normal playback
latency.