Much like the RadLight Directshow filter this file was last updated in 2007. You do not need to install this file so you can run it off a USB drive. If you want to control your DirectShow filters then this file will do it for you. The file is still very popular and included in most codec packs today. The software is small and very easy to use.
Note that this files has not been updated since 2005 yet is still very popular to give you good music quality with a much smaller audio file. The MPC format which it creates has been based on the MPEG-1 Layer-2 and on the MP 2 algorithms which makes it very useful. Most codec packs still add this into their combinations as it is still widely used.