not exactly
a once off fee. From their site...
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1 Year Full & Unlimited access @ 3.49€/month (save 65%!!!)
6 Month Full & Unlimited access @ 5.99€/month (save 33%)
3 Month Full & Unlimited access @ 8.99€/month (26.97€)
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and from their FAQ
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Are there any per-download fees?
None, whatsoever. Once you become a member there are no further fees for software or service. We present everything conveniently to you as every aspect of our service is aimed to help you obtain maximum enjoyment.
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So it looks like youre not paying for software but are for the songs.
If you want to go file sharing for free, try any of strangely enough my favorite,
limewire, isnt on the list.
Theres the usual [broken link removed] that go with all the above links.
As to the specifics of your question, I dont know whether they are legally selling tracks for you to download (but I doubt it). You could contact
IRMA, if youre that concerned.