I have no line in on my laptop. What I tried is plugging my POD device (for guitar) into the PC via USB, plugging a cable form the phones output on my synth into the line input on the back of my POD device, while keeping the synth plugged in to the PC also to make sure I get the correct patches. I then loaded my recording software (different from PT) and played the track back on PT, hoping it would route thru the synth, into the POD, and into the PC/recording software. I triewd different combos of midi drivers in PT. No luck.Maybe I have to activate the line level for the POD in the POD software - not sure.