We pushed an update earlier today for iHear Network, released initially a few days ago. Users will now begin the app with "Only New" mode turned off.
Please try out the new build and let me know if you have any questions.
NOTE: some phones, such as DroidX, need to download an additional text-to-speech (TTS) package to hear content read in a British accent. Here's a link to the package that enables this functionality:
Text-To-Speech Extended - Android Market