how to save to .wav from .avi

[widescreen forever]

I had some music and dialogue I recorded on a cassette tape back in the 70's and want to transfer this to an .mp3 (.wav) for my PC . .So I hooked up the rca audio jacks(cassette deck) to my 5054 Liteon Recorder but the recorder will only copy TV or video signals to its Harddrive, it could record audio only but being a black background I need some referance to where I am in the recording . So I then hooked up the video out from my PVR and recorded the weather channel (time check running) for the video to 'piggyback' the audio signals from the cassette deck to a recorded .iso file .. I now have a video/music file that is about 40 minutes in length on my liteon.. I then burnt/finalized/transferred that file over to a DVD+R and stuck that disc in my dvdrom on the XP pro PC and proceeded to transfer this to an .avi type file so I can strip the music/audio over to my 'movie maker' program and then hopefully save the audio portion back to an mp3 or a .wav .. so far I am stuck. as I don't have a current sound card that takes rca jacks so I can go directly to my PC I have to do the round about as described ..
I currently own avs4you and dvdfab6 as well as my windows XP software.,
The material I want to transfer over is not copyright as it was recorded over the air from a radio station in the 70's that is currently defunct.

[kozikowski]

<<< I don't have a current sound card that takes rca jacks >>>

But it may not be that hard to add one.

Read about the UCA-202 we reviewed here...

http://forum.audacityteam.org/viewtopic.php?f=27&t=9477

Look up TMPGEnc software. They might be able to convert between AVI and other formats. I think QuickTime Pro for Windows can do that, but I would have to dig to check. These are all money-based solutions.

It's possible that Audacity 1.3.12 with the FFMpeg add-on can help you.

http://audacityteam.org/download/

Koz