as per the manual, the box stops recording when it reaches its file size limit. so, you must set it at 4 gb and just open w/ cdwav to make the file small enough for wavelab or whatever. i ran mine for the first time saturday night for a 4 piece jazz band. it sounds great, but its true test will be tomorrow night for gov't mule. my first impressions are: the menu is very easy to use, batt life is good, transferring is kinda slow, but other than that i have no complaints.