Worked on the mixxxdj/mixxx repository to enhance the reliability of audio effects, focusing on stability and audio accuracy for live DJ performance. Addressed a bug in the Flanger effect by correcting the low-frequency oscillator (LFO) frame calculation, ensuring beat synchronization remains accurate when the flanger period changes. This fix improved audio position consistency during rapid parameter adjustments, reducing mismatches and potential runtime issues in beat-matching workflows. Demonstrated strong skills in C++, digital signal processing (DSP), and real-time audio engineering by implementing safe, targeted code changes with careful regression testing, contributing to more dependable beat and tempo synchronization in DJ applications.