was watching a replay of myself (zerg) vs a protoss which i lost. i had his gateway selected and i heard in the middle of the replay "additional suppy depots required" i think a sound file might have been messed up since there were no terran in the replay

Thank you for your report Rombommagic, we are currently aware of this issue and hope to have it resolved in a future patch. You can find a list of other known issues by going to the following thread:
Known Issues List http://forums.battle.net/thread.html?topicId=23279958079&sid=5000

-Kragg