There have been a significant number of posts from people frustrated by their inability to add an MP3 player, XM or Sirius satellite receiver, or other audio input to their 2004, 2005, and 2006 volvo (XC90 and other models) when equipped with the MOST audio system. There is a petition to Volvo to do something about this -
http://www.petitiononline.com/volvomst/petition.html
Hopefully we can get enough of these people to sign the petition and get Volvo to pay attention to this.
Please click on the link and sign the petition.
Thanks.