Sorry Butterscotch, the site is not legal. You are not paying a royaltly to the coptright hoilders. The site is hosted in Russia, however i guess you are not in Russia, therefore the laws of the country you reside in are in force. (read the last paragraph below)
Sorry mate, use itunes, mycokemusic, wannadoo music etc.
If it seems to cheap to be true, it isnt!
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