I have no aswer for your RealAudio problem, I guess you're also one of the victims of Firefox' new quick-new-release schedule, which makes it hard for add-on developers to keep up. However, I can tell you that, if you want to switch to Chrome, it should at least transfer your bookmarks without a problem.

Even though Chrome is capable of doing this, it only does it once (at setup). For my bookmark synching, I use a small free utility called Xmarks. It allows for bookmarks/settings synching between all browsers (in every direction), and does it every time you close your browser. This means that, if you added a bookmark to Firefox during your session, it will be added to Chrome as well and vice versa. Very handy. It used to do password synching as well, but it got aquired by LastPass last year and so now you have to install LastPass for that. Which is not that bad actually because in hindsight it also does a great job and it's also free.