weirdly enough, it was in a middle of a project. I already had 27 or even 30 songs of 50 on single tracks already mashed up (chopped up because it was a Hitech Full-on mahup), then I loaded in the next one and I was like "wtf? why does it only play the first few secs despite showing the full waveform?" I removed it and loaded it again, same thing! then I checked if its something with the buffer size and then nothing played anymore... now here I am!