XMX (or just X) Channel 2 was a commercial-free, satellite radio station on Sirius XM Radio, formerly XM Satellite Radio. Originally used to remind subscribers of overdue payments, the channel changed to a music format on August 1, 2007 and featured popular exclusive XM music programming played all day, every day. XMX was discontinued on November 12, 2008, as part of the merger of the SIRIUS and XM channel lineups.