hi ahmed, if you using speex lib it is accoding version you use. i know that the last stable version is 1.0.5 and the unstable one is 1.1.12. where windows binaries available only for 1.0.4 that i used. and also you must know than you need ogg files to use it. you can download it from vorbis site<http://xiph.org/downloads/>. and i have another good alternative you can use. is speex ACM codec<http://www.republika.pl/roed/speexw/>. it is good and use to use as many ACM codecs, using only few APIs. i hope this help you. also you can contact me at eid@doook.net. Team Leader Eid Mahmoud Exa Tech. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/speex-dev/attachments/20060315/6c2d9885/attachment.htm