Where do the music MP3 local download files reside on my device? The digital download music file local location on your hard drive depends on the device, most computers running Windows will place downloaded files within your 'Downloads' or 'Music' folder under your user profile and may actually automatically launch Windows Media Player or any other application associated with MP3s, you can also launch either 'My Computer' or 'Windows Explorer' to check your 'Downloads' or 'Music' folder or search your hard drive for *.MP3 files, then you could create your own folder and copy the music to that location. The Mac type computers use iTunes as the default music player so when you click download link from the web page that may download to the default root music location and iTunes may automatically convert the MP3 file start playing the music, iTunes also includes a function to add downloaded songs to the Music Library. The iTunes default setting confirms whether selected songs should be added to the Music Library, iPhone and iPad devices also contain iTunes and function similar. Other mobile devices can use a variety of default or installed applications to handle the location and playing of music files, check you device documentation for further assistance.