Can't "add audio" using .wav file

[derrickec]

I'm sure there is a simple solution here, but I can't find it.

I'm converting an .avi into an iPod compatible .mp4 (using ffmpeg). I'm muxing the audio in seperately, using a .wav file (although I also tried .aac and .mp3). I click the "add audio" button, find my file, and set it to encode to AAC. And for some reason, it won't work. Here's the error log.

Input #0, avi, from '/Video/PA01.AVI':
Duration: 00:24:29.6, start: 0.000000, bitrate: 1222 kb/s
Stream #0.0, 23.98 fps(r): Video: mpeg4, yuv420p, 704x384
Input #1, wav, from '/Video/PA01.WAV':
Duration: 00:24:29.6, start: 0.000000, bitrate: 705 kb/s
Stream #1.0: Audio: pcm_s16le, 22050 Hz, stereo, 705 kb/s
Could not find sync stream #0.1

It looks to me like its still searching for the audio attached to the video file. Please, someone tell me what I'm doing wrong here.

[major]

The mux audio feature, for now, requires the video file has also audio, and it will replace its audio with the other track.