I have the same problem..when i scan it, its beeing found without any problems, its even registered as an audio device, but somehow i cannot use it..ill check the audio options later, maybe i can solve the problem that way...i will tell u after!
In case anyone knows what to do..i´d be sooo glad to get some help! I dont want to throw the h300 away and waste the 40 bucks on the ps3 headset!
thanks