1) Download the app from the Amazon Appstore 2) Open the app and tap the settings icon 3) Tap the Add-Ons tab 4) Tap the Install button next to the player you want to install 5) Wait for the player to install 6) Tap the player to open it 7) Tap the settings icon in the top right corner 8) Tap the Account tab 9) Tap the Switch button next to the player you want to switch to 10) Tap