I recommend the following books
Martin lings : Muhammad based on the earlist texts
Aisha Bewley: As-Shifa this is a translation of a classical text.
Wisdom of the Prophet by Thomas cleary
Islam and the destiny of man by charles gai eaton
And Muhammad is the messenger by Annemarie Schimmel
Or you can buy the Yusuf Islam cassette or CD
Or Sheikh Hamza Yusufs CD set
If I can help you anymore, please email me.