XM CEO Sees Satellite Radio on Cell Phones  LOS ANGELES (Reuters) - XM Satellite Radio Holdings Inc.  &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=XMSR.O qtype=sym infotype=info qcat=news"&gt;XMSR.O&lt;/A&gt; chief executive officer Hugh Panero on Wednesday said  he expected satellite radio and cellphone services to  converge  within the next five years.