For those who don't know there are some amazing labels out there that offer up amazing music, much of it for free. I recommend donating to these labels to keep them afloat or to purchase artist works when available.
Lots and lots of free tracks, mixes, podcasts and a host of other goodies.
These are great sites to discover new music being spun by other artists.
There are many of these sites out there but here is a brief list where I've spent much time lately:
Cold Fiction Music label
Sound Source Netlabel
Highest recommendation. May your journey continue...