Integration: $\int_0^\infty \frac{\sin(at)}{2\cosh 2\pi t-1} \text{ d}t$

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I am trying to calculate the following integral: $$\int_0^\infty \frac{\sin(at)}{2\cosh 2\pi t-1} \text{ d}t$$

The inspiration for it was that a similar integral carries a closed form:

$$\int_0^\infty \frac{\sin at}{e^{2\pi t}-1}\text{ d}t=\frac{1}{4}\coth \frac{a}{2}-\frac{1}{2a}$$

I was wondering how exactly to go about solving the topmost integral.