Look for and ignore MPG3hook files

[redshodan]

Ignore these mpg3hook files. They end with .mp3 so mishmash tries to grok them and complains about no valid mp3 frames.

Example album with mpg3hook files. The file command recognizes them as "AppleDouble encoded Macintosh file". Every mpg3hook file in my repo has the same md5sum: bc66ea6a6136e8a72ec1c1efddcaebd6

total 66228
drwxrwxr-x 2 baron baron    4096 Nov 14  2010  ./
drwxrwxr-x 4 baron baron    4096 Nov 29  2010  ../
-rwxrwxr-x 1 baron baron      82 Nov 14  2010 '._10 Quito.mp3'*
-rwxrwxr-x 1 baron baron 3382300 Nov 14  2010 '10 Quito.mp3'*
-rwxrwxr-x 1 baron baron      82 Nov 14  2010 '._11 Cotton.mp3'*
-rwxrwxr-x 1 baron baron 4635004 Nov 14  2010 '11 Cotton.mp3'*
-rwxrwxr-x 1 baron baron      82 Nov 14  2010 '._12 Against Pollution.mp3'*
-rwxrwxr-x 1 baron baron 5787189 Nov 14  2010 '12 Against Pollution.mp3'*
-rwxrwxr-x 1 baron baron      82 Nov 14  2010 '._13 Pigs That Ran Straightaway Into The Water, Triumph Of.mp3'*
-rwxrwxr-x 1 baron baron 4604952 Nov 14  2010 '13 Pigs That Ran Straightaway Into The Water, Triumph Of.mp3'*
-rwxrwxr-x 1 baron baron      82 Nov 14  2010 '._2 Palmcorder Yajna.mp3'*
-rwxrwxr-x 1 baron baron 6098632 Nov 14  2010 '2 Palmcorder Yajna.mp3'*
-rwxrwxr-x 1 baron baron      82 Nov 14  2010 '._3 Linda Blair Was Born Innocent.mp3'*
-rwxrwxr-x 1 baron baron 3995417 Nov 14  2010 '3 Linda Blair Was Born Innocent.mp3'*
-rwxrwxr-x 1 baron baron      82 Nov 14  2010 '._4 Letter From Belgium.mp3'*
-rwxrwxr-x 1 baron baron 5316772 Nov 14  2010 '4 Letter From Belgium.mp3'*
-rwxrwxr-x 1 baron baron      82 Nov 14  2010 '._5 The Young Thousands.mp3'*
-rwxrwxr-x 1 baron baron 7253162 Nov 14  2010 '5 The Young Thousands.mp3'*
-rwxrwxr-x 1 baron baron      82 Nov 14  2010 '._6 Your Belgian Things.mp3'*
-rwxrwxr-x 1 baron baron 5458689 Nov 14  2010 '6 Your Belgian Things.mp3'*
-rwxrwxr-x 1 baron baron      82 Nov 14  2010 '._7 Mole.mp3'*
-rwxrwxr-x 1 baron baron 6410247 Nov 14  2010 '7 Mole.mp3'*
-rwxrwxr-x 1 baron baron      82 Nov 14  2010 '._8 Home Again Garden Grove.mp3'*
-rwxrwxr-x 1 baron baron 5077368 Nov 14  2010 '8 Home Again Garden Grove.mp3'*
-rwxrwxr-x 1 baron baron      82 Nov 14  2010 '._9 All Up The Seething Coast.mp3'*
-rwxrwxr-x 1 baron baron 5191426 Nov 14  2010 '9 All Up The Seething Coast.mp3'*
-rwxrwxr-x 1 baron baron      82 Nov 14  2010 '._We Shall All Be Healed_The Mountain Goats_1_Slow West Vultures.mp3'*
-rwxrwxr-x 1 baron baron 4518938 Nov 14  2010 'We Shall All Be Healed_The Mountain Goats_1_Slow West Vultures.mp3'*
baron@dib ~/src/unsonic $ file "music/The Mountain Goats/We Shall All Be Healed/._We Shall All Be Healed_The Mountain Goats_1_Slow West Vultures.mp3" 
music/The Mountain Goats/We Shall All Be Healed/._We Shall All Be Healed_The Mountain Goats_1_Slow West Vultures.mp3: AppleDouble encoded Macintosh file```