The easiest way to find Indian film music and soundtracks is to perform a focused search with a large digital music retailer, such as iTunes, using "Bollywood" as a keyword. This music is also available via digital and physical media from sites such as Amazon.com
The most important part of searching for soundtracks or other music from Indian films is to remember the keyword "Bollywood." This term was originally used to describe the light romantic musical comedies from India, specifically films made in Mumbai. It has since been appropriated more widely as an encompassing, if inaccurately applied, term for Hindi cinema in general.
The presence of large expatriate and first-generation citizens of Indian heritage in the United States has created enough demand that large digital music online retailers now offer an extensive selection of Indian film soundtracks. These include both new releases as well as reissues of film music from classic Hindi cinema movies.