Sorry to hear you're having trouble connecting to your music library. What SoundTouch system do you have?
Are you trying to add an iTunes or Windows Media player library? For iTunes, go to Preferences > Advanced, then check Share iTunes Library XML with other applications. If this option is not checked, other applications—like SoundTouch—will not find your iTunes library.
Alternatively, you may have to refresh the SoundTouch server. To do this,
Right-click the SoundTouch icon in the system tray (Windows) or menu bar (Mac)
From the pop-up menu, select "Quit SoundTouch Music Server
After, reload the SoundTouch app and let me know if things have improved!
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