Could this be a factor? Note The Beep function requires UIPermission at the SafeTopLevelWindows <http://msdn.microsoft.com/en-us/library/system.security.permissions.uip ermissionwindow%28VS.71%29.aspx> level, which may affect its execution in partial trust situations. For more information, see Requesting Permissions <http://msdn.microsoft.com/en-us/library/yd267cce%28VS.71%29.aspx> and UIPermission Class <http://msdn.microsoft.com/en-us/library/system.security.permissions.uip ermission%28VS.71%29.aspx> . Thank You ~Doug Rooney Sonoma Tilemakers IT Manager 7750 Bell Rd. Windsor Ca, 95492 (707) 837-8177 X211 (707) 837-9472 FAX it@xxxxxxxxxxxxxxxxxxxx <mailto:it@xxxxxxxxxxxxxxxxxxxx> -----Original Message----- From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Matt Kosht Sent: Tuesday, February 09, 2010 11:25 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] Issue with VB6 program audio beep I have a in house app that uses the VB beep function (see below) for error tones in it's source code http://msdn.microsoft.com/en-us/library/kz27k38z(VS.71).aspx This works fine on a PC ,but it is silent in a Citrix session. Other audio works fine. I can play wav files and these are heard for example. -Matt ************************************************ For Archives, RSS, to Unsubscribe, Subscribe or set Digest or Vacation mode use the below link: //www.freelists.org/list/thin Follow ThinList on Twitter http://twitter.com/thinlist Thin List discussion is now available in blog format at: http://thinmaillist.blogspot.com Thinlist MOBILE Feed http://thinlist.net/mobile ************************************************