Does anyone know what the limit is for the size of a WAV in a map?

As big as you can fit I'd imagine.

I just tried to add a 75 Megabyte file to a blank map, uncompressed and it worked, very, very, VERY slowly. It almost crashed. Then when I tried to click the sound to play, it took about 1 minute to actually start playing the .wav . I would just say a limit would be >1 Megabyte.

But whenever I try to put a song on a map and make it play it just dosen't make a sound at all.

What type of compression?

No compression .

Does the sound actually play outside of StarCraft?

Yes

Post the map and or sound?

Ok, hold on 1 minute ill edit this post when i get it.

I think that maybe because it's a MP3 lol...

Please tell me that your just kidding...