Update: 1/14: We now have recommended fixes and resolutions to this issue here.

Update: 12/30/13: We have received information from several customers that the workaround of toggling the EQ does not operate correctly. We request if you fall into this category of customers, to contact Chris with Rocket Player support at [email protected].

Chris here with some support news for Rocket Player listeners. Several Samsung listeners have reported a loss in sound after an receiving an OTA system update on their device.
While we do not know exactly what is causing this, we do know how to work around the issue. Simply toggle (On/Off/On) the EQ in Rocket Player and your sound will return. Here's a YouTube video on how to turn ON the EQ