Server 2008R2 - best methodology to monitor folders for new files andplay a notification sound file

I'm upgrading a small client from Server 2003 to Server 2008 R2. They receive data files from clients in D:\inetpub\ftproot\LocalUser\username\INCOMING (I moved IIS to a non-OS drive). Then for the same user the edited fileis placed in the \OUTGOING folder. There are multiple clients.

But everything that worked before is now inoperative. What's the best way forward - PowerShell? forfiles batch file? Or?

As an old techie I'm partial to a very simple solution like forfiles running in as a scheduled task but it needs to work on 2008R2 SP1 and be able to play a sound (or send a text message might be an alternative).