I accumulate short keyboard compositions using a sequencer which writes MIDI files to a floppy. The sequencer gives each file a new name and a new extension. Thus the first file is
Song_01.X01 and the sixtieth, say, is Song_60.X60
I then transfer them to my desktop, but before I can work on them I have to alter the extension to .MID by renaming each file.
Is there any way of changing all the extensions at once, rather than one at a time ?