I just got an H2O Audio iDive 300 for Christmas. For those who don't know what I'm talking about, it is an underwater housing for iPods able to go 300ft under. Sounds like a great idea being able to listen to music while diving, but is it a bad idea. Would it be beter to only use it for decompression stops, or is that a bad idea, too. The only downside I could think is that it would be harder to hear your buddy signaling you. But as long as you don't have it too loud, whats the harm. Any thoughts on listinging to music while recreational diving? Good or bad news?