Prolem with blocking music file hotlinking

rewrite rules for .mp3, .rm, .wma and so on

[philipsXXLB]

I have a piece of code like this to play music automatically on my website <embed src='http://upav.aaaa.com/newattach/20/538/0/lzhd.wma' autostart='true' width='300' height='60' loop='1'></embed>

I have used mod_rewrite and sucessfully block image hotlinking, but I don't know how to block such kind of music files' hotlinking. Because when I try to use the same rule, these files cannot be played on this embed code either.

Anybody can help me out with this?

Thanks very very much for your help!

[jdMorgan]

Referrer-based access control won't work for "playable" media files, because most players do not send an HTTP Referer header.

You'll need a script-based solution: For example, a script that checks a short-term cookie set by one or more of your HTML pages, and then "includes" and sends the media file only if that cookie is set.

There may be some off-the-shelf scripts available for this; I don't know, but it's worth a look.

Jim

[philipsXXLB]

Thanks very much for your reply. But I did not get it. Can you please explain more on this? Thanks very very much!

It is really a big headache for me.

[philipsXXLB]

Because I am using tomcat working together with the apache server, the hosting company suggests me to use a servlet filter to solve this problem. Can anybody give the idea of how to write the servlet filter program? I means what's the difference between the accessing source, from my embed code, and from outside?

Thanks very much!