Unminus is described as 'Free premium music for your projects' and is an website in the Audio & Music category. There are more than 25 alternatives to Unminus, not only websites but also apps for a variety of platforms, including Mac, Windows, iPhone and iPad. The best alternative is ccMixter, which is both free and Open Source. Other great sites and apps similar to Unminus are Incompetech (Freemium), eoun.com (Free), YouTube Audio Library (Free) and AudioJungle (Paid).
Thousands of copyrighted music compositions by Kevin MacLeod offered as Royalty-Free music: - for Free under Creative Commons license crediting the artist, - or purchasing a license where attribution is not wanted or is otherwise impossible.
AudioJungle is part of Envato Market. At AudioJungle you can buy and sell royalty-free music and sound effects that are completely Podsafe for just a few dollars, which includes a Buyer Fee. The site is home to a bustling community of audio composers and producers.