Replug breakaway cable protects your 3.5mm jack:
Replug’s clever breakaway concoction essentially does for 3.5-millimeter audio jacks what MagSafe does for Apple’s power connection, as it simply snaps away when excess pressure is applied to “protect your audio jack from the rigors of daily use.” The device works in any 3.5-millimeter auxiliary input, be it on your laptop, PMP or desktop, and should be available sometime this fall for a currently undisclosed price.