I am using an Alesis Multimix 8 USB. Apparently I need a different driver because when I record another track, the first track is recorded onto the second track as well. I have tried everything (preferences,sound, devices) I attempted to download other drivers but when I do There is unwanted software downloaded like PC Clean Pro and the driver I requested is not there. Please! help

I don’t think that’s a driver problem. I’m not a Unix elf, but that almost always happens when you record Everything Your Computer Is Playing rather than a specific sound device. The setups for personal recording and overdubbing are different from recording internet audio.

I have no idea how to set that in Linux.

Audacity > Edit > Preferences > Devices > Recording.