2Gen iPod Shuffle Does Not Play .m4a Songs
My 2Gen iPod Shuffle 1GB only plays songs that I purchased from iTunes (.m4p) and will not play any songs that I ripped to iTunes (.m4a). According to iTunes, I successfully transferred 80 songs on to my Shuffle. Under the Settings tab, it shows that all the songs are loaded and I have plenty of capacity available. Under the Content tab, all my songs are listed. I have the latest software version and have reset twice with no success. My iPod Classic plays the songs fine. I appreciate any help or suggestions.
MacBook, Mac OS X (10.4.10)