i would like to add some music to video files that i have.

what program would i use to do that

i have DivxtoDVD, Cucusoft AVI to DVD, and winAVI.
if that helps at all

thnx

I would do that with either MovieStar(Dazzle Fast Movie Star 4.24) (since that have a sound line where I can drop audio in produce) or Mainconcept'd Mpeg 2 Encoder that can do it too.

If you want a freeware method:

If the original video already has an audio track that you want to keep then you need to extract the audio and then mix the music track with the original track and then remux the new audio to the video.

I use a freeware audacity http://audacity.sourceforge.net/ to load the avi and it will extract the audio. Import the music track and edit either track and mix them. This program lets you also record etc...

I use a freeware Avi-Mux http://www-user.tu-chemnitz.de/~noe/.../AVIMux%20GUI/ gui to remux the avi because it's easy and accepts mp3 input. You just drag and drop the original avi and the new audio and press "generate data source from file" and then select which audio you want to keep.
In audacity, if you save the new audio as wav you can also use virtualdub to input the original avi (use directstream copy) and select the audio input as wav. Then save as anyfilename.avi. If you use Virtualdubmod or avi-mux gui you can actually save 2 audio tracks . The original one and the modified track. Media player classic lets you select which audio track to play.

It helps if the audio you select is the same length as the video but you can also insert the music at a selected point in audacity.

If you don't want the original audio track or the avi has no audio then the process is the same just skip using audacity.

It's not as simple as a commercial standalone program but it will do the job.