This may be due to the fact that your songfile is saved in Db, but the song is not in Db.

Notice that you changed it to C, but it comes out in D...

Reread what I wrote above and follow the steps exactly and see what happens then.

If an Audio track is playing along, try going into the folder using Windows Explorer where this song file is stored and look for an Audio track (.wav, .wma or .mp3) that has the exact same name prefix as the .sgu file. Change the name of that Audio file by adding one character to it, or simply remove the file to another location. If you no longer want or need the Audio file, just delete it. Do this with Band in a Box completely closed down, then reopen the song in BB and check operation.

BUT BE SURE TO FIRST CHANGE THE KEY SIGNATURE TO Eb, following the dirctions above, then Save the song in that corrected situation before proceeding.

--Mac