It means that you are allowed to use the sounds without paying further fees.
The 'if any' part means 'whether you have paid or not'. We added this because some sounds are free and some are not.
Hope that helps.
Cheers.
License question
It means that you are
Hello. I want to use few tracks from SoundSnap in my flash game, but I am not sure about the license. License says that I can use the sounds in any video game whether commercial or not, without paying addiotional royalties or other fees beyond the initial membership cost (if any). Please help me to figure out. Thanks!