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If you use the optional FFmpeg library you will need to download the 64-bit versions of them. Screen Reader Version. Versions 2.1.2 to 2.3.3 of Audacity are not sufficiently accessible for visually impaired users who use VoiceOver, and not suitable for OS X 10.5 either, so we provide the older 2.1.1-screen-reader version instead.
Jul 20, 2016 Your Mac comes with a unique set of sound effects that you can assign as the default system alert. Some of these sounds are actually fairly ancient and may elicit feelings of nostalgia. However, you can change your system alert to any other sound effects your Mac comes with, or you can add custom sounds yourself–as well as turn them off completely.

Jul 07, 2007 So, as far as I can see, audio output is fine for the USB headset output but not for the others. Is there a simple fix? The nearest Apple store is about 200 miles away and I don't fancy the idea of posting the Mac off. (And I think it's still under warranty for a couple more weeks.) Mac mini Mac OS X (10.4.10).

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Audio MIDI Setup User Guide

If you use MIDI devices or a MIDI interface connected to your Mac, you can use Audio MIDI Setup to describe the configuration of your MIDI devices. There’s a default configuration already created, but you can set up your own.

You can use this configuration information for apps that work with MIDI, such as sequencers, to control your MIDI devices.

Note: Make sure your MIDI devices are connected to your Mac. If you’re using an interface device, connect any other MIDI devices you’re using to the interface. Also check that any software provided by the manufacturer of the MIDI devices has been installed. For more information, see the documentation that came with your devices.

View a MIDI configuration

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In the Audio MIDI Setup app on your Mac, choose Window > Show MIDI Studio.
In the MIDI Studio window, click the Choose MIDI Configuration pop-up menu (it may show Default), then choose the configuration you want to view.
In the toolbar, click the following buttons to change how the configuration is shown:
- Hierarchical View : Devices in the configuration are shown as icons. If a device isn’t connected, its icon is dimmed. To view information about a device, such as channel properties and ports, and to add or remove ports, double-click the device’s icon.
- List View : Devices in the configuration are shown in a list, organized by type (such as Interface or External Device). If a device isn’t connected, it’s dimmed. To filter which devices are shown, click the Show pop-up menu, then choose an option (such as Online or Connected). To view information about a device, double-click the device. To view its ports, or to connect or disconnect devices, click the device’s disclosure triangle.

Create a MIDI configuration

In the Audio MIDI Setup app on your Mac, choose Window > Show MIDI Studio.
In the MIDI Studio window, click the Choose MIDI Configuration pop-up menu (it may show Default), then choose New Configuration.
Enter a name for the new configuration, then click OK.
To add a new external MIDI device, click the Add button in the MIDI Studio toolbar.
To set properties and add or remove ports for the MIDI device, double-click the device, or select it, then click the Device Info button in the toolbar.
In the Properties window, do any of the following:
- Describe the device: Enter a name for the MIDI device; the name appears in apps you use with the device. If you know the manufacturer and model, you can enter those.
- Change the device icon: Click the MIDI device’s icon to open the Icon Browser, select a different icon to represent the device, then click the new icon to close the Icon Browser.
- Change the device color: Click the color well, select a different color to use for the MIDI device, then close the Colors window.
- Set the device channels and other properties: Click Properties, then click the channels to use for transmitting and receiving audio. To deselect a channel, click it again. Also select whether to use the MIDI Beat Clock, the MIDI Time Code, or both, then select other features.
- Add or remove ports: Click Ports, click the Add button below the list of ports, then specify the MIDI In and MIDI Out connectors for the port. To delete a port, select it in the list, then click the Remove button .
- Select MIDI-CI profiles for interface devices: If an interface device supports MIDI-CI, click MIDI-CI to see the profiles available on each channel. To turn a profile on or off, select or deselect its checkbox.
Click Apply.
Repeat steps 4 through 7 for each MIDI device you want to include in the configuration.
In the MIDI Studio window, specify the connection between MIDI devices:
- In Hierarchical View , drag the In or Out connectors at the top of a device icon to the corresponding connector on another device icon.
- In List View , click a device’s disclosure triangle, click the Port disclosure triangle, click the Add Connection icon, then use the pop-up menus to specify the connections.

If you have a MIDI interface connected to the USB port on your Mac, it should appear in the MIDI Studio window. If it doesn’t, see If a connected MIDI device isn’t shown.

You can’t specify a “MIDI thru” connection between two MIDI devices. To indicate a MIDI thru connection, connect the two MIDI devices to the same port of the MIDI interface device.

Edit a MIDI configuration

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In the Audio MIDI Setup app on your Mac, choose Window > Show MIDI Studio.
In the MIDI Studio window, click the Choose MIDI Configuration pop-up menu (it may show Default), then choose Edit Configurations.
Select a configuration, then click Duplicate, Rename, or Delete.
When you’re finished making changes, click Done.

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See alsoTest your MIDI connection in Audio MIDI Setup on MacMIDI Studio window in Audio MIDI Setup on MacIf an audio device isn’t working in Audio MIDI Setup on MacIf a MIDI device is dimmed in Audio MIDI Setup on MacIf a MIDI app isn’t using the configuration in Audio MIDI Setup on Mac