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Background Music in Kwik 2

In this tutorial, we will be finishing the cover page for our book app. We will add a background audio to our book app and create a button to toggle the background music on and off. We will also program the Info button to go directly to the information page of our app.

The background audio will play continually throughout the book unless the reader turns it off with the Music button on the Cover page. Because this is a toggle button, clicking the button again will turn the music on.

The information page for your app can contain what ever information you wish. For our sample app, the page contains miniature covers of two other books by the publisher and a link to the publisher's website, which will open in the iPad web browser.

Open your project in to Photoshop.

Select the cover page from the list of pages in the Kwik panel. In the Page/Components section of the Kwik panel, you should see "@ cover" at the top of the section.

Our first step is to import the background audio file on to the page. Background files tend to be large files. As with all audio files, you will need to balance the large size of the file with the overall size of the app. In the sample app, I've chosen a 37 seconds long audio file that I have optimized in Adobe Soundbooth to 98 KB.

  1. Click the Project and Pages icon in the Categories bar.

  2. Click the Add Audio tool in the Toolset to open the Add Audio dialog box.

  3. Location: Browse to the background audio file.

  4. Check the box for Short File. Although this file is a larger file, we want it to begin as soon as the app opens to the Cover page. So we need to load the audio file into memory at the start.

  5. Check the box for Play When the Page Starts.

  6. Check the box for Play in All Pages. This will tell Kwik to keep the audio in memory and play the audio between pages.

  7. Loop: Forever.

  8. Volume: 10

  9. We have 32 audio channels for our app. Let's use the 32th channel for the background audio. Put 32 in the Use Channel box.

  10. Click Save. You should see the audio file listed in the Components list.

Now we will set up the toggle button for the audio file.

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