ok you need to create your .s files uncompressed. if you drag and drop your midi on mid2agb.exe, you do get a .s file, but its compressed. the only solution? command prompt. ill go ahead and tell you how, but i will be making a simple batch file to do this for everyone later. first, know the directory of your mid2agb folder. for example, mine is C:\documents and settings\3dd13\desktop\mid2agb
ok, with that in mind, press the windows key+R and type in cmd. hit enter, and look at what it says.
usually, it will be something like "C:\documents and settings\yourusername\" now type in cd put a space and select your directory that mid2agb is in. now type in mid2agb.exe and hit enter.
you will notice that it has a list of commands. this is all you need to type:
mid2agb.exe midiname.mid midiname.s -n
next you press enter and viola, a uncompressed .s file should magically appear!