Hi Tony, Thanks I'll try to get my head around that. I do make sure the Normalise is checked when I render the MP3. I had better go back to the beginning and reload each of my songs into BIAB then start with the mixer levels. If I recall my BIAB seems to set the various vol levels at 90 when I select a style. I'm not sure what the 90 means and I don't know much about digital and theory. If I leave it like that the MP3 seems to be quiet soft so I have set the main slider at the bottom of the mixer to 10 for all songs. That's too high then? I have tried to change by loading a set of MP3 back tracks into MP3Gain and lowering the level a little at a time until the Vol column shows no more clipping ticks. Tonight I'll save that to my tablet and see how it sounds into the mixer. I did notice that compared to the other inputs into the mixer (mic and guitar) the tablet with the MP3 tracks on has to be cranked up very high. Too much thinking makes my head ache.