Yes, the lossless audio file you're using is probably compressed — that's completely fine for this reason.

I regularly get questions about lossless audio files, or files compressed in a lossless format, for my Ask the iTunes Guy column. These questions come from people who seek to listen to the best ...

Compression close compressionA method of reducing file sizes, particularly in digital media such as photos, audio and video. addresses these issues. Any kind of data can be compressed. There are two ...

A detailed industry explainer is challenging common misconceptions about 'lossless' audio, clarifying that many lossless formats are compressed yet retain full fidelity. The report distinguishes ...