刚刚用Audio Player插件加载了一首MP3，竟然是双倍速度播放，声音失真。找到官方主页，发现原来是Adobe Flash player的问题。

The “chipmunk” effect

The Macromedia Flash player has a problem playing files that are encoded at a rate that is not a multiple of 11.025 kHz. This effect is sometimes called the “chipmunk” effect: the file is played at double speed. To avoid this, encode MP3s at 11.025 kHz 22.050 kHz or 44.100 kHz.

也就是说用Audio Player加载的MP3音乐文件的采样率最好是11.025KHz或22.050KHz或44.100KHz。