Simply copy everything between Code Start and Code End into a module and
save the module. (Make sure you don't name the module the same as any of the
routines in it)
In your custom splashscreen, you need 1 line of code:
Call fPlayStuff(strMIDIFile)
(where strMIDIFile contains the complete path to your MIDI file)
To stop it from playing, you also need 1 line of code:
Call fStopStuff(strMIDIFile)
I don't think it gets any simpler than that....