I know there are other threads that talk about this issue and I have posted this fix in the right threads but I wanted to share this with a larger audience as this fix seems to help all audio that comes from our EVO's. So even if you don't use Pandora or Slacker Radio you can still benefit from this. All thanks should go to the developers of MixZing for there ability to give us an audio equalizer that helps the sound. For all those having sound issues with Pandora and Slacker Radio after the 2.2 upgrade. I have seemed to have stumbled across a simple fix for the sound issue. 1. Download an app called MixZing (free version works fine) from the market. Load up the app. 2. Make sure you have at least one audio mp3 on your phone. 3. Play that music file. 4. In the left hand bottom corner of the application there is an icon that resembles an equalizer. Click it. 5. After it comes up Click the "On" check box. 6. Select the arrow next to were it says "flat" and change it to "Bass Boost". You will hear a considerable difference in the sound. Now by doing this this seems to change all of the audio that you play. I noticed after changing this my Pandora and Slacker radio sound improve tremendously. Hope this post helps!!!!