Fix plugin boom, make customizable

plugins/boom

@@ -8,16 +8,15 @@
 
 #GUIPLAYER=smplayer
 
+NUMTRACKS=100
+
 if [ ! -z "$GUIPLAYER" ]; then
     PLAYER="$GUIPLAYER"
-    find . -type f \( -iname "*.mp3" -o -iname "*.flac" -o -iname "*.webm" -o -iname "*.wma" \) | sort -R | head -n 100 | xargs -d "\n" "$PLAYER" > /dev/null 2>&1 &
+    find . -type f \( -iname "*.mp3" -o -iname "*.flac" -o -iname "*.webm" -o -iname "*.wma" \) | sort -R | head -n $NUMTRACKS | xargs -d "\n" "$PLAYER" > /dev/null 2>&1 &
 
     # detach the player
     disown
 else
-    # exit MOC server
-    mocp -x
-
     # start MOC server
     mocp -S
 
@@ -25,7 +24,7 @@ else
     mocp -c
 
     # add up to 100 random audio files
-    find . -type f \( -iname "*.mp3" -o -iname "*.flac" -o -iname "*.webm" -o -iname "*.wma" \) | sort -R | head -n 100 | xargs -d "\n" mocp -a
+    find . -type f \( -iname "*.mp3" -o -iname "*.flac" -o -iname "*.webm" -o -iname "*.wma" \) | sort -R | head -n $NUMTRACKS | xargs -d "\n" mocp -a
 
     # start playing
     mocp -p