Getting around Pandora’s 40-hour monthly limit
In the past 6 months or so Pandora has implemented listening restrictions on their free service. It's really quite simple to get around this limitation, you just need more than one Pandora account. You might be thinking, well what about my radio stations?? Pandora allows you to share your stations with your friends, just share your stations with yourself. If you don't already have more than one email address, go out to gmail and register a second address, or even a 3rd or 4th. GMail let's you forward all email to a single account, so as an example, I would just set up webguypandora1@gmail.com, webguypandora2@gmail.com, etc. and forward them each back to webguy@greatwebguy.com. Whenever you hit that 40 hour limit, just simply logout and log back in with a different account. You're other option would be to just pay the $36/year subscription 
Pandora cutting out using naviplay bluetooth stereo dock with iPhone
I have an iPhone 3G and recently bought a Naviplay bluetooth transmitter off of Amazon for $6 so that I could stream to my Sony S805 bluetooth headphones, since the bozo's at Apple decided to not make the bluetooth stereo protocol available directly from the iPHone. Yes both of these work with the iPhone, even though the Naviplay doesn't state that it will. Keep in mind even though the dock is designed to charge an iPod, it doesn't seem to charge the iPhone, minor problem. Anyhow I mostly listen to Pandora on my iPhone so that I can listen to a variety of music that I don't necessarily have on my iPhone, I noticed as soon as I started using the dock and the headphones that the sound kept cutting out in the headphones periodically. I tried a different dock, a different iPhone, removing apps, changing settings on the phone, same problem. Turns out something that Pandora does seems to be causing the intermittent sound problem, after trying just the iPod feature and a couple of other streaming applications, Pandora seems to be the only application that this happens with. So if you're having a similar problem with the dock, it's probably not the dock, your phone, or a rouge app just seems to be Pandora.