The accusers tried to deflect their criminal activities by blaming me, but they were eventually convicted of their wrongdoing.

Now that I am in the clear, how do I get my seized money?

If you have an attorney he can get it back for you provided you are cleared of any wrongdoing.

Once you were cleared the prosecutor's office should have released everything. If they did not talk to the prosecutor or have your attorney do so.

If the money and records were not part of any crime ( your crime or their crime) and all charges have been dropped and the material no longer is needed as evidence, your attorney can make a motion to have it released