HP Set to Launch Latest Push Into Consumer Markets  SAN FRANCISCO (Reuters) - Hewlett-Packard Co. &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=HPQ.N qtype=sym infotype=info qcat=news"&gt;HPQ.N&lt;/A&gt; on  Friday will unveil a range of products including its version of  the iPod digital music player that raises the stakes in a war  between PC and electronics makers for a spot in increasingly  digitized living rooms.