QUOTE
Music Loop
Conditions:
Bring(P2, atleast, 1, anyunit, "music on");
Switch(Switch 250, set);
Actions:
PlayWAV("Utop1.wav");
Switch(Switch 249, Clear);
Wait(5650);
Switch (Switch 249, Set);
Preservetrigger();
Music Switch
Conditions:
Bring(Force1, atleast, 1, anyunit, 01-02-Respawn);
Switch(Switch 249, set)
Actions:
SetSwitch(Switch 250, Clear);
SetSwitch(Switch 251, Set);
That should work. You may want to make it so once force 1 brings atleast 1 any unit to 01-02-Respawn that it sets switch 248, then replace "Switch(Switch 248, Set)" as the first condition in the second trigger. This makes it so if they have moved out of the location by the time the song finishes the song still switches.
And, of course, 249 and 248 are just examples I thought up; use whatever you like.