A system and methods for running interactive applications (e.g., video game, computer game, console game) over broadband network (e.g., IPTV network, broadband mobile network, broadband Internet, cable network, etc.). In an embodiment, interactive applications can be hosted and executed remotely by an interactive application host either natively or using emulation (e.g., virtual machine, emulation of software platform, operating system, or hardware platform). Audio of the interactive application can be rendered by one or multiple audio rendering apparatuses, compressed, transmitted over the broadband network to one or multiple clients (e.g, set-top box, media player, game console, mobile device, personal computer), and presented by the client's audio display device. In additional embodiment, said audio rendering apparatus can render multiple streams of audio for multiple clients concurrently. An audio rendering apparatus can cache the audio data shared by multiple clients or multiple instances of an interactive application to reduce bandwidth consumption. Furthermore, during audio presentation, a client synchronizes audio and video display.