Relapse Records, one of the premier metal labels out there (imho), is celebrating 25 years. They are offering a sampler of 184 tracks for free. However, there is a donate option. I threw them $5 from via my PayPal account, just to help support the musicians out there on the record, but if you are on a budget, you can just put in 0 and it will let you download the zip file. There is a flac option for the audiophile conscious out there. I chose the mp3.
Here’s the link: 25 Years