Was working on my demo, which was part remix part vocal add-in and overdub. I used my M-Audio FastTrack to capture an audio stream and record my microphone pick-up, which resulted in a stereo track that on the left was microphone and the right the audio stream off my phone. Which was fine because then I just copied that, pasted it as a new track and flipped the channels for the full experience, began my remix and editing work from there and it was sounding awesome. So that morning I got through editing and effect-ing what was gonna be my first track and my plan was to cut and upload the next day. When I went to mixdown and cut that selection the next day, even before that, just proof-listening to the selection, my stereo channels weren’t playing in my headphones the way they did the morning I originally recorded it and edited it and was very happy with it. One of the channels wasn’t even coming through the headphones at all. All that I can think changed was putting my computer to sleep. Closed re-opened the files still couldn’t get back to how I had it. Anyone have any advice on how I can get it to play back the way it did originally that morning, and hopefully rip a mixdown of that as well just how it sounded that morning? If it helps, the file also has a mono mic track and another stereo track on the bottom. Can provide screenshots if necessary. Whoever reads this, thank you for the help.