Late 2013 Macbook Pro OS X 10.9.3 Maverick
Macbooks don't use standard stereo trs jacks, they use '4 ring' jacks. Anything else is likely to just not make a firm connection - see MacBook owners frustrated by new audio jacks

You didn't give enough info re your USB attempts for me to guess. Edit your question to provide more info &amp; I'll see if I can modify this answer.