I think the "supermaket promotions thing" your thinking about is/was called "Shelf Spotters." Made for the supermarket industry the little battery operated 1 minute message repeaters didn't sell well so the company did some creative marketing and sold all of their stock to small museums looking for cheap exhibit interactives. Alas the company is now out of business. There are lots of companies making "digital message repeaters" -- check out http://www.avitra.com -- http://www.stoplisten.com -- though none seem to combine the durability and recording time and price of the Shelf Spotters. - David - David Lewis, curator Aurora Regional Fire Museum www.AuroraRegionalFireMuseum.org ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes).