I purchased an iPod Touch 5th generation to play music in my 2014 LS 460. However, the audio system is incapable of digesting my music library for use with voice commands, even after reducing the library to 78 songs and 2 playlists. I suspect there is something about the 5th generation iPod Touch that is incompatible with the LS 460 voice command system. I can play the iPod using the mouse and screen but when I try to give a voice command to play a playlist or song, I get a message "Because of the amount of music detected on your device, this command is not available." Any suggestions?