When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
If you have the NAV unit, it can copy many CD's onto the HD. No need for a Multi CD Player. However, it takes time to do that.
I however, have all my CD's digitized. So I put over 5500 (About 700 albums) songs on a 64GB thumb drive and just leave it plugged in. I have access to all the songs via the Media option [USB] on the NAV unit.