SetupHardware();
 
        LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
-       sei();
+       GlobalInterruptEnable();
 
        for (;;)
        {
        bool ConfigSuccess = true;
 
        /* Setup Audio Stream Endpoint */
-       ConfigSuccess &= Endpoint_ConfigureEndpoint(AUDIO_STREAM_EPNUM, EP_TYPE_ISOCHRONOUS, ENDPOINT_DIR_OUT,
-                                                   AUDIO_STREAM_EPSIZE, ENDPOINT_BANK_DOUBLE);
+       ConfigSuccess &= Endpoint_ConfigureEndpoint(AUDIO_STREAM_EPADDR, EP_TYPE_ISOCHRONOUS, AUDIO_STREAM_EPSIZE, 2);
 
        /* Indicate endpoint configuration success or failure */
        LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
                                uint8_t EndpointControl = (USB_ControlRequest.wValue >> 8);
 
                                /* Only handle SET CURRENT requests to the audio endpoint's sample frequency property */
-                               if ((EndpointAddress == (ENDPOINT_DIR_OUT | AUDIO_STREAM_EPNUM)) && (EndpointControl == AUDIO_EPCONTROL_SamplingFreq))
+                               if ((EndpointAddress == AUDIO_STREAM_EPADDR) && (EndpointControl == AUDIO_EPCONTROL_SamplingFreq))
                                {
                                        uint8_t SampleRate[3];
 
                                uint8_t EndpointControl = (USB_ControlRequest.wValue >> 8);
 
                                /* Only handle GET CURRENT requests to the audio endpoint's sample frequency property */
-                               if ((EndpointAddress == (ENDPOINT_DIR_OUT | AUDIO_STREAM_EPNUM)) && (EndpointControl == AUDIO_EPCONTROL_SamplingFreq))
+                               if ((EndpointAddress == AUDIO_STREAM_EPADDR) && (EndpointControl == AUDIO_EPCONTROL_SamplingFreq))
                                {
                                        uint8_t SampleRate[3];
 
        uint8_t PrevEndpoint = Endpoint_GetCurrentEndpoint();
 
        /* Select the audio stream endpoint */
-       Endpoint_SelectEndpoint(AUDIO_STREAM_EPNUM);
+       Endpoint_SelectEndpoint(AUDIO_STREAM_EPADDR);
 
        /* Check if the current endpoint can be read from (contains a packet) and the host is sending data */
        if (Endpoint_IsOUTReceived() && StreamingAudioInterfaceSelected)