I am currently having this problem where the OT is not sampling any audio either from the external sources or from internal source. At times, it will sample, but the file will be blank but almost all the time, it will not sample at all. I have checked all the setting and it seems to be fine. Even when I am sampling, I can see the record icon for the track change to indicate that it is recording. Wanted to find out whether others have had this similar problem. Seems like there might be some defect with the machine, as it was working fine prior to this experience.