Have a Media Composer V 8.5.3 with Fast Track Audio V 6.1.11, after using Media Comnposer for a while the Audio on the headphones start to have a lot of noise, had to restart the application (MC) to fix the noise. HP Z420 Interl(R) Xeon(R) CPU E5-1650 0 @ 3.20GHz, 16 GB RAM Any ideas will be greatly appreciated Ramon Servin