With Filestar you get 253 different skills for working productively with RealMedia File (.rm) files.
About .Rm
Name
RealMedia File
Extension
.rm
Format
Binary
Category
Video
Developer
RealNetworks
Description
An RM file is a multimedia file used by RealPlayer, an audio and video playback and streaming program. It contains audio or video data or a link to a streaming media file, which is played back as it is downloaded. RM files are commonly used for streaming content over the Internet such as video and Internet radio.