Hello am3591, The SoundTouch systems and application are compatible with Windows Media Player, iTunes, and a NAS drive for stored music. In order to play a personal music library stored on a Windows computer I have listed the steps below:
Download and install the SoundTouch application directly from our website linked HERE
Launch the SoundTouch application on the computer
Click on the "EXPLORE" panel
Choose "ADD MUSIC"
Select "Music Library on Computer"
Then choose either Windows Media Player or iTunes
Name the library or keep the default name
Choose "ADD MUSIC LIBRARY"
Once the library has been added to the application, you will see the music library available in the source list for the explore panel. You may need to wait a minute or two for the application to sync with your library before accessing the content through the SoundTouch application. Thank you.