This operation searches text in MIDI or MP3 files in a chosen folder and all music files in the sub folders.
First search might take long time, information will be collected for future searches. Additional searches in this folder will be quicklier. The search optimization only works with not write protected folders. GNMIDI generates a file gnmidtxt.fnd in each not write protected folder.
The matching filenames are written into a text file that will be shown with notepad editor.
the word is searched in filename (often contains artist and song title) and MP3 ID3 tag fields.