PC Pilot is a freeware software for Palm Garnet OS 4.0 or later based mobile devices that allows you to control applications on your Windows PC from your Palm via WiFI or Bluetooth.

You can control the following applications on your PC:

Windows Media Player & Apple iTunes-
Main controls: next / previous track, fast forward & rewind (depending on configuration)
Sound volume controls
Track title & artist on your Palm
Optional display of the player interface (full screen or normal)

Microsoft Powerpoint slideshows-
Full navigation: previous / next and first / last slide
Pause / restart
Slide title & number on your Palm
Speaker notes on your Palm

Download here