arduino to interface with pc via ppm 3.5mm jack and spp software

i have a uno, and some rc stuff i have a spektrum basic 4 ch tx and a 6ch rx, the transmitter does not have a trainer output port, and to use my transmitter with a rc sim called helisim it needs the trainer port output, im curious if possible, can i connect the receiver to my arduino, and have my arduino output ppm signal over a 3.5mm stereo headphone jack connect ot the mic input of my pc, with spp software and ppjoy running to convert and manage signals and controls