ASIO

Low-latency audio driver used on Windows

List of Multi-Client Audio & MIDI Drivers (Windows)

There is a known limitation on Windows with many drivers for audio and MIDI hardware: They do not support multi-client operation. This means Synfire and a DAW can not play audio or send/receive MIDI to the same device at the same time. This problem only arises when the DAW and Synfire are run at the same time. It is also not specific to Synfire. On Windows in general, running more than one DAW at a time is a challenge. This problem does not exist on OS X.

Message: "Failed opening MIDI system" on startup (Win7/64)

If your startup log reads like this, there is probably a conflict with the ASIO4ALL driver under Windows 7 64bit:

Linking to external MIDI libraries
exception occured #(3221225477 0)
Failed opening MIDI system [exception occured #(3221225477 0)]
Failed opening MIDI system [error: 2]. Possibly built-in GS Wavetable Synth is blocked from using your audio driver.

Subscribe to ASIO

Scholarly Lite is a free theme, contributed to the Drupal Community by More than Themes.