I picked up a Tascam DP 004. Planning on using it for recording down the road. I'm playing with it now by recording one track guitar in and another track from an MP3 player. The output is obviously stereo from the computer, but the input (1/4 line in) is mono. The guitar track is fine, but the stereo out/mono in is getting "lost in translation." Monitoring it over heaphones while recording sounds fine, but playback it sounds like it's off in the distance. Is this a mix/pan issue or is there something I can do different? Would a 1/8" stereo to 1/4" mono adapter fix that? does it actually combine both the stereo TRS signal to the single TRS of the mono?