It also has deals with label groups Universal, Beggars Group and US indie TVT.

In addition, the legal filesharing site today launches Qtrax version 0.3, promising enhancements to its user system, including improvements to its interface and interactivity.

The Warner/Chappell deal represents a significant development for Qtrax, which controversially launched in January boasting the full support of the music industry, despite not having deals in place with any of the major labels.