How Can I USE Bose Companion 2 Series II Computer Speakers

If I read this right

http://worldwide.bose.com/productsupport/en_us/web/companion2_series2/page.html# listview=function_connecting_other_products&tab=setup_tab&article_type=view_arti cle+track_article&article_href=/productsupport/en_us/web/article_220_connecting_ a_computer/page.html%3Fproductlabel%3Dcompanion2_series2%23article_body

... this is Daisy-Chainable -- in from the iMac and out to the http://xtrememac.com/prestashop/audio/9-tango-bar-99000016263.html

it may also work in reverse but the latter did not show pictures, just an encouraging last sentence in the product description

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the link to the extremeMacBar had an "allusion to the connectivity" you desire - I dunno what exactly it means but maybe the reference to " OPTIONAL " ⬇ is the key

XtremeMac’s Tango Bar™ speaker let’s you enjoy audio from the computer like never before with cutting edge technology that delivers twice the output power of most traditional USB speakers. There is a six speaker configuration with dual dome tweeters, midrange drivers and passive radiators. Tango Bar’s single USB connection for both power and audio can connect to any computer or wall charger USB port. The simple plug and play USB connection cleans up any workstation area by reducing cord clutter. Additional connections include a headphone output and line-in jack for personal listening or use with MP3 devices as well as an ➨ optional ⬅ sub-out port.