Based on this, one option you have is to record a non-important video-only source as well as your intended audio source. Just plug in any video source to the video input (not the antenna or cable input) and the audio from your the stereo audio inputs from your tape deck or CD player that are associated with the same video input, and you should be OK. Since you aren't concerned about video quality on this, you can record up to six hours of audio on your DVD using the lowest record setting (some DVD recorders now have an 8-hour mode as well).
When you play the DVD back, you don't have to watch the video part Just remember that you can only play a DVD on a DVD player -- your recording will not play on a CD player. The audio recorded on a DVD is encoded into the 2-channel Dolby Digital audio format.
