For the PlayBGM function you need to specify the music as a string and the time as a float
Here is the function definition:
PHP Code:
PlayBGM(client, String:music[], Float:time, bool:loop=true, char[] name="", char[] artist="")
Other error is because PlayBGMAt isn't defined, maybe you meant playBGM? Variable names need to be exact and are case sensitive, be careful when typing them.
Another note is you should learn to read what the compiler tells you. It gives you the line that causes the error as well as an error message to help you identify the problem.
e.g. Line 2932 number of arguments does not match definition means that the function is missing some arguments, in this case music and time
Line 2989 undefined symbol 'PlayBGMAt', means that PlayBGMAt isn't a variable
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