Dubbing two sounds in same place?

[Twee]

I am considering to buy a remote control for my camcorder. One of the extra features is 'Audio Dub'. This means I could put music and sound effects on my movies. But can I dub one without losing the other one? I would hate it for my music to stop every time a gun was fired.

[RedRaven]

You will need a separate sound mixer with two inputs (very affordable these days). Play your music through one input and your sound effects through the other - the mixer will mix the two sound sources and this is then out-put to your camera when you use the audio-dub feature. So you can have music and gunshots at the same time!

[Brien]

If you are cutting the video together on VHS, there are two seperate tracks for sound. You could put more audio on the second track in post