The license tax imposed in section ten of this article shall be in lieu of all other license, income, excise, special or franchise taxes of this state, and no county or municipality or other political subdivision of this state shall be empowered to levy or impose any license, income, pari- mutuel, excise, special or franchise tax on any racing association engaged in the business of conducting a horse or dog race meeting at which horse or dog races are run for purses under the jurisdiction of and being licensed by the Racing Commission, or on the operation or maintenance of the pari-mutuel system of wagering, or on the sale of any commodity during a horse or dog race meeting at which horse or dog races are run, or at any such horse or dog racetrack nor shall there be, hereafter, any imposition of tax pursuant to articles twelve, thirteen or fifteen of chapter eleven of this code on the income or receipts of owners, trainers or jockeys directly arising from their services which are essential to the effective conduct of a horse or dog racing meeting: Provided, That the foregoing provisions of this section shall in no way affect, abridge or abolish the authority of a municipality to impose the license tax authorized by the provisions of section eight, article thirteen, chapter eight of this code.