Note: Straight Ahead Jazz Horns requires a copy of Kontakt Player or the full version of Kontakt already installed on your computer. If you do not have Kontakt Player, you can download and install it for free from here: http://www.native-instruments.com/en/products/komplete/samplers/kontakt-5-player/
STEP 1: Download all the RAR files for from your order email, or ISW account page. Check that the file sizes are correct compared to the sizes listed on the download page.
STEP 2: Using an application like WinRAR (PC), 7-Zip (PC), UnRarX (Mac), or Keka (Mac), extract the Straight Ahead Jazz Horns.part1.rar file. This will create a folder called Straight Ahead Jazz Horns. You do not need to extract the other parts! They unpack automatically.
STEP 3: Move the Straight Ahead Jazz Horns folder to the desired location on your computer. An internal hard drive is recommended; if you must use an external drive, we recommend USB3 or Thunderbolt to ensure speedy load times.
STEP 4: Open Kontakt, and make sure the Browse panel is open on the left side. Click the "Libraries" tab, and select “Add Library”. Navigate to the extracted Straight Ahead Jazz Horns folder and select it.
For more info on adding libraries, please see the following guide: https://support.native-instruments.com/hc/en-us/articles/209584189-How-Can-I-Add-aSample-Library-to-KONTAKT
STEP 5: You will be prompted to Activate the library in Native Instruments Service Center. Use the serial number provided via email.
STEP 6: You’re ready to use the instrument!