I am starting over....

Hi -- After several years hiatus, I am looking to get back into audio...

As of now, all I have is a HD with about 1TB of apple lossless files I ripped myself back in about 2010. 

I am taking a front-end first approach to reestablishing my audio life -- Can I attached my HD to this unit and run with it? Is there a unit out there (other than an apple product) that I can just attach my HD and run with it??? 

As I said, it been a minute and its clear digital music has passed me by over the last several years and I need to play catch-up...THANK YOU in advance,.,