Thanks.

I am using the only Band in a Box App on the iTunes site and running Windows on my laptop. The only files the app seems to play are .MGU.

I have now discovered that I can set the volume level to 0 for tracks I do want to hear but then the song needs to be re-rendered and re- downloaded - a really time consuming process!

The other option seems to be to disable unwanted tracks in Band in a Box before uploading a file to the Ipad. Again this is tedious because it has to be done for every file