[SoX-users] Mix command is not working properly

[cocoa d. <coc...@gm...>]

Hi,

I am doing one mac os x project in which i need to trim the songs and mixing
two songs,

I have added sox unix binary to project and doing by NSTask class.

I able to do trim the songs, but when i try to mix the songs then it works
like concatenating.

I am try to mix two songs each 60 mb and 5 minutes duration so it gives me
10 minutes and 100 mb songs after mixing the songs but i think this
concatenating result.

I am using following command to do, "Sox -m /Users/mac/Desktop/infile1.wav
/Users/mac/Desktop/infile2.wav /Users/reubro/Desktop/Final.wav

and my objective-c code is like,

NSString * toolPath;
toolPath = [[NSBundle mainBundle] pathForResource:@"sox" ofType:@""];

NSDictionary *defaultEnvironment = [[NSProcessInfo processInfo]
environment];
NSMutableDictionary *environment = [[NSMutableDictionary alloc]
initWithDictionary:defaultEnvironment];

task = [[NSTask alloc] init];

NSString *file1 = @"/Users/mac/Desktop/infile1.wav";

NSString *file2 = @"/Users/mac/Desktop/infile2.wav";

NSString *outputFile = @"/Users/mac/Desktop/Final.wav";

NSMutableArray *mArray = [[NSMutableArray alloc] init];
[mArray addObject:@"-m"];
[mArray addObject:file1];
[mArray addObject:file2];
[mArray addObject:outputFile];

[task setArguments:mArray];
[task launch];

anyone has idea that where i am wrong?

Thanks.