This is a collection of mobile phone ringtones featuring some dialogue from the Firefly television series. First released in 2002, this series spanned across only one season with a total of 14 episodes that ended in 2002, and 1 movie (called Serenity) that was released in 2005. The ringtones in this collection are separated into two types: the "main" ringtones are intended for use with incoming phone calls and the "notify" ringtones are intended for use with phone notifications (such as incoming text messages).
More information about Firefly can be found on Wikipedia and IMDb. A sample of the Firefly series can be seen in the video below...if you enjoy these ringtones, you can watch all of the Firefly episodes on the Hulu website or you can obtain the entire series from a reputable retailer (such as Amazon.com) in order to support the people who helped bring it to the public.