This video, via LiineTV, looks at how to use WiFI MIDI with a Windows PC, specifically with the Lemur iPad app.

via LiineTV:

– Download and install loopMIDI: http://www.tobias-erichsen.de/loopMIDI.html
– Launch Lemur Daemon.
– Launch loopMIDI and Create two new ports.
– Connect your device through the ad-hoc network.
– Launch the Lemur app.
– Set the ports in the Lemur app.

Connect with the Lemur community – http://www.liine.net