Sweet, this has been puzzling me for a while... Repro Steps: Platform: Firefox 25.0.1, Ubuntu Ubuntu 12.04.3 LTS with HTTPS Everywhere enabled 1. Go to any amazon mp3 page, for instance [this](http://www.amazon.com/The-Wailin-Jennys/e/B0017P8I1A/digital/ref=ntt_mp3_rdr?_encoding=UTF8&sn=d). 2. Click either 'Preview all songs' or the play icon next to any song. Expected: Sample preview. Actual: Fails with 'Error 3'. This issue is related to the CloudFront rule (disabling that makes the page work). Cheers! -Damian PS. On a side note we should rename the HTTPS Everywhere components to be consistent. We have both 'EFF-HTTPS Everywhere' and 'HTTPS Everywhere: Chrome'. They're sorted alphabetically so they should start with the same prefix.