ccMixter

CcMixter.org is home to thousands of creative commons audio tracks, including SpinningMerkaba. 

A Quick Tutorial: (Click on the screenshots to get started!)

Select the song you want to use, share, or remix. All the details for the track are here:

Notice that "You Already Have Permission" with Creative Commons Licensing.  Read the proper uses for each spiningmerkaba audio track here:

If you need extra permissions, CC+ music licenses allow use above and beyond the original creative commons license. Go there to get your license:

Downloading tracks is easy!