怎么将MP3/WAV转化为AU格式？

到霏凡软件站下载ImTOO 3GP Video Converter v2.1.62就可以转换了。
下载地址：http://www.crsky.com/soft/4697.html
这是一款将多种视频包括avi/mpeg/MPEG2/DVD/WMV/RM/RMVB等转换为3gp的工具。下面是它的支持信息：
Supported file format
Video:
Input:
MPEG(mpg, mpeg, dat, vob); WMV; ASF; AVI; QuichTime(mov, qt); MPEG4(mp4); 3GP; DV(dv, dif); Real Video(rm); Animated GIF(gif - decoding only); Macromedia Flash(swf - decoding audio only);
Output:
3GP, AVI, MPEG

Audio:
Input:
MPEG Audio(mp2, mp3); WMA; WAV; AU; MPEG4 Audio(m4a); Real Audio(ra); OGG; AAC; Raw AC3(ac3); NUT Open Container Format(nut);
Output:
MP3, WAV
Supported video and audio codecs
Video codecs:
MPEG1 video; MPEG2 video; MPEG4(DivX4/DivX5); MSMPEG4 V1; MSMPEG4 V2; MSMPEG4 V3(DivX3); WMV7; WMV8; H263(+)(Real Video 1.0); MJPEG; Lossless MJPEG; Apple MJPEG-B; Sunplus MJPEG; DV; Huff YUV; Asus v1; Asus v2;