Olympus to Launch Hard Disc Portable Music Player  TOKYO (Reuters) - Japanese precision equipment maker  Olympus Corp. &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=7733.T qtype=sym infotype=info qcat=news"&gt;7733.T&lt;/A&gt; said on Wednesday it would launch a  portable music player equipped with a hard disc drive, entering  an increasingly crowded field now dominated by Apple Computer's  &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=AAPL.O qtype=sym infotype=info qcat=news"&gt;AAPL.O&lt;/A&gt; iPod.