If you are looking to duplicate NT server services, the answer is Samba. It duplciates file services and can even be configured to take over as a primary Domain Controller.
Linux 7.2 is a bad choice. The media capabilities of Fedora Core 1 or Red Hat Enterprise are much stronger.
With regards to media software specifically, Everything except Windows Media player has Linux versions. There are even players for Linux that will paly those files for you.
To be more specific, please list the software you wish to run.
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