timidity: add page (#6908)

pages/common/timidity.md

@@ -0,0 +1,24 @@
+# timidity
+
+> TiMidity++ is a MIDI file player and convertor.
+> More information: <http://timidity.sourceforge.net>.
+
+- Play a MIDI file:
+
+`timidity {{path/to/file.mid}}`
+
+- Play a MIDI file in a loop:
+
+`timidity --loop {{path/to/file.mid}}`
+
+- Play a MIDI file in a specific key (0 = C major/A minor, -1 = F major/D minor, +1 = G major/E minor, etc.):
+
+`timidity --force-keysig={{-flats|+sharps}} {{path/to/file.mid}}`
+
+- Convert a MIDI file to PCM (WAV) audio:
+
+`timidity --output-mode={{w}} --output-file={{path/to/file.wav}} {{path/to/file.mid}}`
+
+- Convert a MIDI file to FLAC audio:
+
+`timidity --output-mode={{F}} --output-file={{path/to/file.flac}} {{path/to/file.mid}}`