I have just purchased the fbv express mk 2 to use with my amplifi 75. I was hoping I would be able to change Chanel's whilst playing along with music on my I pod. To do this I planned to turn off the auto tone loading. It seemed to work the first time I tried it. Since then it will not change the Channels. I can only do this using the I pod changing tones and this has a massive delay between tones. Can anyone help me?