The Musrun MP3 Player is not displayed in the iTunes library. However, the music files can be copied from iTunes via the Explorer. Ideally, create a corresponding "MUSRUN" playlist in iTunes, update it each time and then copy it all via the Explorer. Editing, deleting, sorting and moving on the Musrun without a PC is unfavourable! Tip: Create a subfolder for MUSRUN; e.g. Current, then delete if you don't like it or are tired of listening to it; when comparing files, you can immediately see what should also be edited in iTunes!