Here you go..

; //load -rs mp3.mrc ..
menu channel,query {
-
open file :{
var %file = $$sfile(C:,Select File)
run %file
var %len = $calc($sound(%file).length / 1000)
var %dur = $asctime(%len,$iif(%len >= 3600,hh:) $+ nn:ss)
if (*.avi iswm %file) say avi ( $+ $nofile(%file) $+ ) ( $+ $remove($nopath(%file),) $+ )
if (*.m3u iswm %file) say m³u ( $+ $nopath(%file) $+ ) ( $+ consists of $lines(%file) tracks $+ )
if (*.mp3 iswm %file) say mp³ ( $+ $nofile(%file) $+ ) ( $+ $remove($nopath(%file),) $+ ) ( $+ %dur $+ ) ( $+ $sound(%file).bitrate $+ kbps $+ )
}
-
}
Tested it with songs over one hour and it works fine