This excerpt taken from the SIRI 10-Q filed Aug 9, 2006.
3. Summary of Significant Accounting Policies
Effective January 1, 2006, we adopted the provisions of SFAS No. 123 (revised 2004), Share-Based Payment (SFAS No. 123R), using the modified prospective transition method. Prior periods are not restated under this transition method. The stock-based compensation cost recognized beginning January 1, 2006 includes