Google "CAT5 interconnects"
It is laughable to some that you can get excellent results with some cheap Ethernet cable and decent connectors, especially those who need to rationalize megabuck cables, but it works.
All you have to lose is a little time and few bucks if it fails. I know people who have very high end systems that sound excellent completely wired with CAT5, speakers too. That will leave you with some spare change to buy what you really need... more music.