Yes we do. Using the HTTP streaming method, we can support the streaming of preloaded clips from our servers in a variety of formats including Real Audio, MP3 and many others. Such clips will need to be generated by the user and then uploaded to the server via FTP. To activate the stream, a simple link to the item will start the download of the clip and once the buffer is full on the receiving machine, the clip will start to playback. Such support may be dependant on the MIME types running on the server. Should you discover that a certain file extension seems to cause issues with streaming of content to certain machines, the issue may be on the registry on the recipient machine being unable to know how to deal with the filetype concerned, we would therefore recommend that customers stick to the more widely supported streaming formats as a result. 

RTSP streaming of media and the streaming of video content are not currently supported on our servers.