I am trying to set the program SongPlayer as my default muic player. I am 90% there. I worked through all the errors and mistakes I made. I can play a song. But, I can't the GUI to show. It like disemboided music. I am not getting any errors, just no GUI.

Run >NIL: SYS:System:Applications/SongPlayer/SongPlayer -GUI %sp

I have tried -GUI and -gui and just can't get it to work.

Should look more like this:

Run >NIL: SYS:Applications/SongPlayer/SongPlayer GUI %sp

That worked, Thanks