InetGet's parameter: filename - bug

[Relive]

#include <IE.au3>
$oIE = _IECreate('http://chanarchive.org/4chan/b/56671/ask-the-joker-anything-i-ll-be-replying-mostly-in-vocaroos')
$bodyTxt = _IEBodyReadText($oIE)

$sBlock = StringSplit($bodyTxt, @LF)

$dest = @DesktopDir & '\TEST2\'
$filename = 'Vocaroo_'
$fileType = '.mp3'

For $a = 1 to $sBlock[0] Step 1
	$isMatched = StringRegExp($sBlock[$a], '(http)(:)(\/)(\/)(vocaroo\.com)(\/)(i)(\/)((?:[a-z][a-z]*[0-9]+[a-z0-9]*))')

	If $isMatched = 1 then
		$vocID = StringTrimLeft($sBlock[$a], 21)

		;$hDL = InetGet('http://s0.vocaroo.com/media/download_temp/Vocaroo_' & $vocID & '.mp3', $dest & $filename & $vocID & $fileType)
		$hDL = InetGet('http://s0.vocaroo.com/media/download_temp/Vocaroo_' & $vocID & '.mp3', $dest & $filename & $fileType)

		;Do
			;Sleep(1000)
			;ConsoleWrite("Download in progress" & @LF)
		;Until InetGetInfo($hDL, 2)
	ElseIf $isMatched = 0 then
		ConsoleWrite($sBlock[$a] & ' is not a Vocaroo link.' & @CRLF )
	EndIf
Next
InetClose($hDL)

Problem:
A string-trimmed variable $vocID cannot be concatenated with its destination path $dest and file type $fileType. $vocID must be removed in order for a download to happen. Compare
the two InetGet(). By removing the said variable, the next problems occur followed by its reasons:

• Without Do-until loop with sleep() included, the next download will replace the previous downloaded file.

  This is because the filename must be static (filled in as a raw parameter) and no dynamic variable can be concatenated.
  

• With Do-until loop with sleep() included, an infinite loop occurs.

  Not necessarily needed since InetGet() can already pause until it continues to the next download.