Wave file flat on one side (from old recordings)

Sometimes I see wave files that are flat on once side only. Is this a problem that needs to be fixed? If so what needs to be done?

I would assume that means that the audio is mono (one channel only) - this would definitely be the case with older audio files. This video will show you how to convert the files: How to Convert Mono to Stereo and Stereo to Mono - YouTube

I figured out the DC Offset was off.