In the United States and UK buying a track from the site is just like buying a record from the record store. The same legal implications are in effect. However, certain regions have different restrictions regarding the legality of playing Digital Music files. We suggest you visit the website of your local publishing / mechanical service to get a more detailed answer. We also recommend that you keep a copy of your order receipts with your music to prove that you have purchased your music legally.
The following links may be useful for finding additional information for your area: