Ken: Good question, first time it's come up. I have discovered that in playing SMF files on occasion one can over come the ability of an organ to digest all the information we are shoving down its throat and it stops. Once you have removed the offending file by turning it back on, it runs fine. I guess a little message should pop up and say, "Bet you won't try that again?" but it doesn't. We'd probably try anyway! I have done this also with a PR-300 which will gleefully keep on sending more and more info until an organ stops in frustration! It appears that within the framework of MIDI there is no protocol like on printer communications from the old teletype days in which the receiver can regulate the flow of information...once its there more can be sent. This is an interesting issue and I wonder if we will be hearing more about it as the organ world gets deeper and deeper into the use of MIDI. One major difference between the PR-300 and PR-300S is said to be memory capacity. As an aside, I visited the website of a major music publisher that stated that the organ at Notre Dame - Paris - plays all day courtesy of a Roland Sequencer. I know that a computer control system (with voice recognition) was installed about 10 years ago, with the organ running through a mainframe about 60 miles away, but would like to know if there is any truth to this...don't think we have any member sin Paris yet...who could go check. noel jones, aago athens, tennessee, usa ------------------------------- frog music press rodgers organ users group www.frogmusic.com To unsubscribe or change mail delivery (digest, vacation) go to our website at www.frogmusic.com Now shipping: HERITAGE HYMNS for the PR-300 and organ solo...play with a MIDI Orchestra.