thanks Macv. I do defrag sometimes 2 times a week. I will try rebooting after each set. Most of the time we only do hour shows in nursing home or elderlys which have never had a problem. We have had pretty good luck moving songs back and forth but we really should try trhem before going live. I love biab for live and recording. last summer we played during the horses or inbetween them run though big PA with subs and it sounded great thanks for the help John