keeping closed loop pump quiet

[fmelindy]

So like the topic says, anybody have any ideas on how to quiet down a pump that's on a closed loop? I'm just getting my tank setup and am having a hell of a time with the pumps and plumbing - its a lot louder than I remember. And it doesn't make much sense because I'm using a eheim 1260 pump which has a reputation for being quiet already. So does anyone have any good ideas on how to keep it quiet? I'm sure I'm not the only one who's ever had this problem - my tank is in my living room in a small condo and quiet is very important for my domestic peace!