I was transferring a track (mp3 format) to my Sony MZ-RH1 recorder when it took an extra long time to finish transferring the last 1%. I clicked the 'stop' button on sonic stage to stop the transfer process, but a few hours later, the red display light is still flashing and "ACCESS" is still on display. I'm afraid if i disconnect the USB cable it will damage my recorder. What should i do?