This a beta version of the WMA fix point codec for the Roku PhotoBridge HD1000. This codec will not decode WMA Professional, WMA Voice or WMA Lossless. The wmadec.c file used is based on the ffmpeg-20041113 source. The codec makes use of the

pll(phase locked loop) is used to fix the circuit to particular frequency

通过AudioUnit来实现两个或多个音频文件混音播放效果，主要是供学习使用-upload for user who want to do same music files fix sounds play