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13.4 How to record from the output of another program

Sometimes, you may wish to record the output of another program (for example iTunes or Safari). One possible way of achieving this is to connect the sound output of your computer (the headphone port) back into the line in input. This is however not very elegant and results in a slight loss of quality due to the two analog / digital conversions that take place.

Solving this problem in a more elegant way is not possible without the help of some additional software. One possible solution is to use the freeware Jack in conjunction with Amadeus Pro. After downloading Jack from http://www.jackosx.com/ and installing it, you can record sound from the output of, say iTunes, by following the steps below. This procedure has been tested with iTunes 7 and JackPilot 0.74; other versions may behave in a slightly different way.

Important: Do not use this procedure to import a sound from your iTunes library into Amadeus Pro, unless it is a protected AAC file. For unprotected files, use the procedure described in Section 13.1.

  1. Make sure that Amadeus Pro and iTunes are both closed.

  2. Open the JackPilot program.

  3. Go to the JackPilot preferences and choose Built-In Output (or whatever your preferred output device is) in Interface. Also make sure that the option Auto-Connect with physical ports is unchecked.

  4. Click on Save in the preferences window and then start the Jack daemon by clicking on Start in the JackPilot window.

  5. Open the Sound panel in the system preferences and choose Jack Router as the default output.

  6. Start iTunes and Amadeus Pro.

  7. Open the Amadeus Pro Sound preferences and choose your preferred output device (for example Internal Speakers) in the Output panel and Jack Router in the Input panel.

  8. Choose Record to New File in the Sound menu (or option-click on the record button).

  9. Bring the JackPilot application to the front and click on Routing.

  10. Click on the little arrow next to iTunes in the Send Ports column in order to expand it and select the first port (labelled out1).

  11. Click on the little arrow next to Amadeus Pro in the Receive Ports column in order to expand it and double-click on the first port (labelled in1). It should turn red and an entry should appear in the Connections column.

  12. Repeat steps 10 and 11 for the second port (out2 and in2).

  13. Start your recording in Amadeus Pro. Enable the Playthrough function in the recording window in order to hear the sound you are going to play.

  14. Start playing a song or a radio station in iTunes.

Note: It is also possible for example to create a virtual four-channel device with Jack. In this way, you can for example route the output of iTunes into the first two channels and your microphone into the last two channels. It is then possible to record all four channels simultaneously with Amadeus Pro in order to create a document with a vocal and a music track.


Copyright © HairerSoft
Last updated on June 22, 2015

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