Amazon.co.uk has pipped BOL at the post to launch an online music shop.
The Amazon online music store carries 120,000 titles across a wide range of genres and is closely integrated with the online bookstore.
BOL said it plans to open an online music store next month to complement its book offerings.
Both Amazon and BOL are looking to get a share of consumers' online Christmas shopping budgets.
Amazon.co.uk is thought to be looking at offering additional services in the UK in line with its US counterpart which sells everything from books to toys and videos.
Engineer calculates that Chengdu's plan to replace streetlights with artificial moonlight would cost $100bn
Research could also apply to other 'space weather' events involving hot, fast-moving plasma
Dark matter holds the Universe together - and gravitational waves could help identify it
Addison Lee is working on autonomous taxis for commuting and pleasure