TypeError: Object #<AudioEngine> has no method 'getInputDeviceIndex'

[jdfreder]

Call stack:

/Users/jon/node_modules/node-core-audio/node-core-audio.js:219
    return this.audioEngine.getInputDeviceIndex();
                            ^
TypeError: Object #<AudioEngine> has no method 'getInputDeviceIndex'
    at AudioEngine.getInputDeviceIndex (/Users/jon/node_modules/node-core-audio/node-core-audio.js:219:26)
    at Object.exports.devices (/Users/jon/Desktop/audio_processor/node/api.js:29:22)
    at Server.<anonymous> (/Users/jon/Desktop/audio_processor/node/api_host.js:9:40)
    at Server.EventEmitter.emit (events.js:98:17)
    at HTTPParser.parser.onIncoming (http.js:2108:12)
    at HTTPParser.parserOnHeadersComplete [as onHeadersComplete] (http.js:121:23)
    at Socket.socket.ondata (http.js:1966:22)
    at TCP.onread (net.js:527:27)