another problem

yesterday, my launcher didn't work, now my whole gamedoesn't work!now it sais fmod.dll is not found. now what do I do?I searched google for the file, re downloaded it, then when I open it it sais to pick what file to open it and to search the internet for information on this file.I don't have a file to open it with and the internet is no help, it sais what it is but not how to open it! HELP PLEASE!!!!!!!!

Reinstall SRB2. >.>

I'd probably go with that too. I'd recommend keeping the setup somewhere, to spare yourself the trouble of downloading it again.

you think I haven't tried that

Redownload and install.