yes the generic driver usbaudio.sys supports MIDI as well. The xp service pack 2 resolves some known bugs on the MIDI side of this driver. Jerome ----- Original Message ----- From: Tim Roberts To: wdmaudiodev@xxxxxxxxxxxxx Sent: Thursday, November 18, 2004 12:05 AM Subject: [wdmaudiodev] Re: USB Configuration Issue Tom wrote: Actually the Midi endpoints are on Interface 4. If the MIDI endpoints are on a separate interface, and they properly advertise themselves in the USB audio class, then you shouldn't need a driver at all. That is, assuming Microsoft actually supplies a USB audio class MIDI driver. Do they? I've only done wave audio. -- - Tim Roberts, timr@xxxxxxxxx Providenza & Boekelheide, Inc.