personally i would say if u was starting up on your own, you should get some free music/mixes out to get your name about, then once there is a demand for your music people will be willing to pay for it! i wouldnt go and buy a tune if ive never heard it or the artist but if ive been getting free tunes off someone and they then started charging for their music i probly would buy it!
Thats my opinion tho i dont really have much expiriance within the industry!
Good luck tho man!

