Hi Brian, to increase or decrease volume use the up and down arrows. Left and right arrows are used for track change. The little button in the middle is the OK button. You can't rename files on the unit. You do it on your pc. Either connect the DM5 via the USB to your pc, or alternatively put the card into a micro SDHC card reader and access the files that way, then using f2 you can rename them. John. ----- Original Message ----- From: Williams Family To: access uk Sent: Thursday, April 05, 2012 9:31 PM Subject: [access-uk] olympus dm5 voice recorder HI just bought the olympus dm5 digital voice recorder. If anyone has one could you help by letting me know how to increase or decrease the playback volume through the internal speaker. be greatful for any other tips also including if it's possible to name recorded files with a name other than the daye and time? thanks brian