Different GoGear models require specific versions of the Device Manager software. For example, the series uses a dedicated Device Manager that provides the following functions:
Philips GoGear devices (e.g., Muse, Ariaz, RaGa, Vibe, Spark, Opus) used or Songbird (for a while) as PC sync software. “v3” most likely refers to:
Select and then "MTP Device" to complete the setup.
Check the box for "Run this program in compatibility mode for."