此方法为在原作者的基础上稍微修改而得，尊重原创。
由于缩进量问题，可能无法通过查找、替换来查找到，只好麻烦大家自己对了。。
懒人可以直接下载覆盖文件（附件），注意：我的为6.1版本，而且是打过最新补丁的，其它版本请勿覆盖。
1、打开default/discuzcode.htm文件，查找：
global $attachrefcheck, $extcredits, $creditstrans, $ftp, $thumbstatus, $authkey, $timestamp, $attachimgpost;
有两处这个代码，在第一个的下面添加：
$media = array('', 'wma', 'mp3','wav', 'mid');
$rms = array('', 'rm', 'rmvb');
$video = array('', 'wmv', 'avi', 'mpg', 'asx', 'asf','WMV');
$divx = array('', 'divx');
2、查找：
</dd>
<!--{else}-->
<dt>
$attach[attachicon]
<a href="attachment.php?aid=$attach[aid]&k=$k&t=$timestamp" target="_blank">$attach[filename]</a>
<em>($attach[attachsize])</em>
</dt>
在上面添加：
<!--/////////BEGIN------------->
<!--{elseif array_search(fileext($attach['filename']), $media)}-->
<dt>
$attach[attachicon]
<a href="attachment.php?aid=$attach[aid]" target="_blank">$attach[filename]</a>
<em>($attach[attachsize])</em>
</dt>
<dd>
<p>
$attach[dateline], {lang downloads}: $attach[downloads]
<!--{if $attach['readperm']}-->, {lang readperm}: <strong>$attach[readperm]</strong><!--{/if}-->
<!--{if $attach['price']}-->
, {lang price}: <strong>{$extcredits[$creditstrans][title]} $attach[price] {$extcredits[$creditstrans][unit]}</strong> [<a href="misc.php?action=viewattachpayments&aid=$attach[aid]" target="_blank">{lang pay_view}</a>]
<!--{if !$attach['payed']}-->
[<a href="misc.php?action=attachpay&aid=$attach[aid]" target="_blank">{lang attachment_buy}</a>]
<!--{/if}-->
<!--{/if}-->
</p>
<!--{if $attach['description']}--><p>{$attach[description]}</p><!--{/if}-->
</dd>
<!--{if !$attach['price'] || $attach['payed']}-->
<EMBED src="attachment.php?aid=$attach[aid]&noupdate=yes" width=400 height=65 type=audio/mpeg ShowStatusBar="1" AutoStart="1" loop=10></EMBED>
<!--{/if}-->
<!--{elseif array_search(fileext($attach['filename']), $video)}-->
<dt>
$attach[attachicon]
<a href="attachment.php?aid=$attach[aid]" target="_blank">$attach[filename]</a>
<em>($attach[attachsize])</em>
</dt>
<dd>
<p>
$attach[dateline], {lang downloads}: $attach[downloads]
<!--{if $attach['readperm']}-->, {lang readperm}: <strong>$attach[readperm]</strong><!--{/if}-->
<!--{if $attach['price']}-->
, {lang price}: <strong>{$extcredits[$creditstrans][title]} $attach[price] {$extcredits[$creditstrans][unit]}</strong> [<a href="misc.php?action=viewattachpayments&aid=$attach[aid]" target="_blank">{lang pay_view}</a>]
<!--{if !$attach['payed']}-->
[<a href="misc.php?action=attachpay&aid=$attach[aid]" target="_blank">{lang attachment_buy}</a>]
<!--{/if}-->
<!--{/if}-->
</p>
<!--{if $attach['description']}--><p>{$attach[description]}</p><!--{/if}-->
</dd>
<!--{if !$attach['price'] || $attach['payed']}-->
<EMBED src="attachment.php?aid=$attach[aid]&noupdate=yes" width=450 height=420 type=audio/mpeg ShowStatusBar="1" AutoStart="1"></EMBED>
<!--{/if}-->
<!--{elseif fileext($attach['filename'])=='swf'||fileext($attach['filename'])=='fla'}-->
<dt>
$attach[attachicon]
<a href="attachment.php?aid=$attach[aid]" target="_blank">$attach[filename]</a>
<em>($attach[attachsize])</em>
</dt>
<dd>
<p>
$attach[dateline], {lang downloads}: $attach[downloads]
<!--{if $attach['readperm']}-->, {lang readperm}: <strong>$attach[readperm]</strong><!--{/if}-->
<!--{if $attach['price']}-->
, {lang price}: <strong>{$extcredits[$creditstrans][title]} $attach[price] {$extcredits[$creditstrans][unit]}</strong> [<a href="misc.php?action=viewattachpayments&aid=$attach[aid]" target="_blank">{lang pay_view}</a>]
<!--{if !$attach['payed']}-->
[<a href="misc.php?action=attachpay&aid=$attach[aid]" target="_blank">{lang attachment_buy}</a>]
<!--{/if}-->
<!--{/if}-->
</p>
<!--{if $attach['description']}--><p>{$attach[description]}</p><!--{/if}-->
</dd>
<!--{if !$attach['price'] || $attach['payed']}-->
<embed id="player$attach[aid]" width="480" height="320" pluginspage="http://www.macromedia.com/go/getflashplayer" src="attachment.php?aid=$attach[aid]¬humb=yes" type="application/x-shockwave-flash" menu="true" quality="high">
</embed>
<!--{/if}-->
<!--{elseif array_search(fileext($attach['filename']), $rms)}-->
<dt>
$attach[attachicon]
<a href="attachment.php?aid=$attach[aid]" target="_blank">$attach[filename]</a>
<em>($attach[attachsize])</em>
</dt>
<dd>
<p>
$attach[dateline], {lang downloads}: $attach[downloads]
<!--{if $attach['readperm']}-->, {lang readperm}: <strong>$attach[readperm]</strong><!--{/if}-->
<!--{if $attach['price']}-->
, {lang price}: <strong>{$extcredits[$creditstrans][title]} $attach[price] {$extcredits[$creditstrans][unit]}</strong> [<a href="misc.php?action=viewattachpayments&aid=$attach[aid]" target="_blank">{lang pay_view}</a>]
<!--{if !$attach['payed']}-->
[<a href="misc.php?action=attachpay&aid=$attach[aid]" target="_blank">{lang attachment_buy}</a>]
<!--{/if}-->
<!--{/if}-->
</p>
<!--{if $attach['description']}--><p>{$attach[description]}</p><!--{/if}-->
</dd>
<!--{if !$attach['price'] || $attach['payed']}-->
<object width="420" height="280" classid="clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA" id="Player_name" viewastext>
<param name="Autostart" value="0">
<param name="CONTROLS" value="ImageWindow">
<param name="CONSOLE" value="_master">
<param name="LOOP" value="0">
<param name="CENTER" value="0">
<param name="_ExtentX" value="9525">
<param name="_ExtentY" value="7938">
<param name="SHUFFLE" value="0">
<param name="PREFETCH" value="0">
<param name="NOLABELS" value="0">
<param name="NUMLOOP" value="0">
<param name="MAINTAINASPECT" value="0">
<param name="BACKGROUNDCOLOR" value="#000000">
</object>
<object classid=clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA height=68 width="420" VIEWASTEXT>
<param name="_ExtentX" value="9525">
<param name="_ExtentY" value="1693">
<param name="Autostart" value="0">
<param name="LOOP" value="0">
<param name="CENTER" value="0">
<param name="SRC" value="$attach[url]/$attach[attachment]">
<param name="SHUFFLE" value="0">
<param name="PREFETCH" value="0">
<param name="NOLABELS" value="0">
<param name="NUMLOOP" value="0">
<param name="MAINTAINASPECT" value="0">
<param name="BACKGROUNDCOLOR" value="#000000">
</object>
<!--{/if}-->
<!--{elseif array_search(fileext($attach['filename']), $divx)}-->
<dt>
$attach[attachicon]
<a href="attachment.php?aid=$attach[aid]" target="_blank">$attach[filename]</a>
<em>($attach[attachsize])</em>
</dt>
<dd>
<p>
$attach[dateline], {lang downloads}: $attach[downloads]
<!--{if $attach['readperm']}-->, {lang readperm}: <strong>$attach[readperm]</strong><!--{/if}-->
<!--{if $attach['price']}-->
, {lang price}: <strong>{$extcredits[$creditstrans][title]} $attach[price] {$extcredits[$creditstrans][unit]}</strong> [<a href="misc.php?action=viewattachpayments&aid=$attach[aid]" target="_blank">{lang pay_view}</a>]
<!--{if !$attach['payed']}-->
[<a href="misc.php?action=attachpay&aid=$attach[aid]" target="_blank">{lang attachment_buy}</a>]
<!--{/if}-->
<!--{/if}-->
</p>
<!--{if $attach['description']}--><p>{$attach[description]}</p><!--{/if}-->
</dd>
<!--{if !$attach['price'] || $attach['payed']}-->
<object
codebase="http://download.divx.com/player/DivXBrowserPlugin.cab" height="400" width="690" classid="clsid:67DABFBF-D0AB-41fa-9C46-CC0F21721616">
<param name="autoplay" value="false">
<param name="src" value="$attach[url]/$attach[attachment]" />
<param name="custommode" value="Stage6" />
<param name="showpostplaybackad" value="false" />
<embed type="video/divx" src="$attach[url]/$attach[attachment]" pluginspage="http://go.divx.com/plugin/download/" showpostplaybackad="false" custommode="Stage6" autoplay="false" height="400" width="720" />
</object>
<!--{/if}-->
<!--/////////END------------->
最终效果见附件。
3、打开：include\post.func.php，查找：
static $safeext = array('jpg', 'jpeg', 'gif', 'png', 'swf', 'bmp', 'txt', 'zip', 'rar', 'doc', 'mp3');
修改为：
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