Problems regarding custom sounds/musics

[bamers]

I remember when I joined 2 weeks ago (I think), the first 20 minutes it worked well, then when I logged in my second time on the server, I started having these problems.

No I must try on others server if this happens.

Hmm..my guess is, there are two actually,

Maybe some security software from your PC is the culprit behind this,
Or from your internet provider

Tell me the result of the other server test.

Btw, what is your OS?