Sounds play faster than normal in-game

[moops]

I downloaded HLDJ a few days ago and attempted to play music and sounds on an empty TF2 server. However, all of my sounds played faster in-game than when I play them in WMP (out of game). I tried other servers, to no avail. All of my sounds are WAV, 8 KHz, 16 bit, as per the guide. (I also downloaded the Sample, but it plays faster than normal as well.) HLDJ loads correctly when I boot up TF2, and I can enter all the commands alright (hldj, hldj1, la, etc.). I then tried deleting and reinstalling HLDJ, but the sounds still play faster than normal. Help!

[Renegade]

Source games require frequency to be 11025Hz (8000Hz is for HL1 games).
From the manual: HL Audio Format