Codec Buddy in Fedora 8

Depends on the EULA of the application, and weither or not the EULA is actually legal. 

Most of Microsoft's tools say things like 'any application you make requires a microsoft
windows license to run' or something like that. Basicly they don't want you to use anything
you make using Micrsoft stuff to run on anything other then Microsoft Windows.

For example:
Years ago there was a fall out with FoxPro developers and Microsoft over this. Microsoft
bought out FoxPro basicly to get FoxPro's customer base. Some of those developers disliked
Windows and did their development on Linux using Wine.. which Microsoft then came back and
told them this was completely illegal. After some fighting the end people figured that while
it was ok to develop their applications in Linux the as long as the end users could only run
Windows to run their applications. (or something like that. It's been a while)

http://www.theregister.co.uk/2003/04/17/ms_legal_threat_d...

That sort of thing is probably happenning with Apple stuff also. I would expect that Apple has
similar things about applications targetting their platform running on Linux.

It's all pretty stupid and is why you either want to be fully legal by licensing stuff from
people like Fluendo..  or just ignore the laws completely and do what you want (like the vast
majority of people)

What you choose to do depends on the sort of liability you would be faced with. :)