As W57BC, WLIG, and WLNY

Founded in 1988 as W57BC, the station was owned by Long Island–based independent station WLIG (now WLNY-TV). It was a translator station out of Mineola, New York; a previous WLIG translator, W44AI (later WNYX-LD), had moved its license to New York City as an independent station airing public access TV. The call letters changed to WLIG-LP in 1995, to WLNY-LP in 1996, and to WLIG-CD in 2010; despite the call changes, the station continued to relay WLNY-TV's programming. After WLNY-TV was sold to CBS Television Stations, WLIG-CD was sold to Local Media in 2012 and temporarily ceased broadcasting.

As WMUN-CD

In mid-2012, the call letters changed to WMUN-CD, and the station began running Classic Arts Showcase full-time. By late 2012, CAS was dropped and the station began airing infomercials. The following year, children's programming was added to fulfill E/I requirements, plus locally produced programming such as Community Impact. In the summer of 2014, The Balancing Act was added to the station's afternoon lineup.

WMUN-CD was the third television station that operated translator station W19EH-D in Stamford, Connecticut, after WEBR-CD, WCBS-TV and WPIX.

Community Impact was moved to late afternoons in 2015, and additional children's programming was added for an hour on weekday and weekend afternoons, thus exceeding the E/I requirements. A few weeks later, the children's programming, along with public affairs programming, was dropped and the station began to air infomercials full-time. The following year, E/I programming returned on the air.

On April 13, 2017, the Federal Communications Commission (FCC) announced that WMUN-CD was a successful bidder in the spectrum auction, and would be surrendering its license in exchange for $23,191,413.^[2] Local Media TV surrendered WMUN-CD's license to the FCC for cancellation on August 28, 2017.