I'm listening to my mouse clicking No, really, I can't even put some music on, because it's so distracting to me. Maybe if it's something like Armik I might not get distracted, but otherwise, anything with lyrics and I'm done.
You should try and play in a flow-friendly environment. That is, as little distractions as possible. Music in the background is not a distraction, but if you're listening to it loudly it definitely is.
When you're in the flow, all the decisions seem to, well, flow. Time passes like you won't believe and your concentration goes up 110%. I've only experienced it a few times while playing poker, and it was amazing. Since then I've always been searching for the perfect time to play and get in the zone.
P.S. If you have so much time on your hands while playing, maybe you're not playing enough tables? You definitely can't get in the flow while playing less than 3 tables - decisions don't pop up fast enough.