Google Services rule prevents playback on iheart.com

The Google Services rule prevents playback on iheart.com.

Versions in use: Firefox 29.0.1 on Windows 7 (all updates installed) HTTPS Everywhere 3.5.1

To reproduce:

Install HTTPS Everywhere, leave default settings.
Navigate to iheart.com and press Play button to begin a given station's playback 

Expected Results: Station loads a song, and it plays; play button changes to pause button

Actual Results: Play button changes to pause button, but no song is loaded

Workaround: Disable the rule 'Google Services' in HTTPS Everywhere preferences