Rockstar Games have announced on their RSS that they have made a  radio station for download on Amazon MP3 and iTunes.

Rockstar News Feed:

Fri, 16 May 2008 - Vladivostok FM tracks have been burning up the charts at Amazon MP3 and we're proud to be introducing killer music from these Russian and Eastern European stars to palettes here in the US. This collection of rock, hip-hop and pop from artists like Ruslana, Seryoga, Glukoza, Basta and more features music from the Vladivostok FM radio station plus additional songs inspired by Grand Theft Auto IV.

Source: Rockstar Games RSS