If your goal is academic research or historical preservation, do not simply Google "Dawla Nasheed Archive download." That leads to surveillance lists and malware.

Fatawa Pour Le Muwahhid : Mosque of Paris - Internet Archive

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The Dawla Nasheed Archive is a collection of nasheeds produced by the Islamic State during its reign. The archive contains a wide range of nasheeds, from solo performances to full-fledged productions featuring orchestral arrangements and choirs. The nasheeds cover various themes, including praise of Allah, the Prophet Muhammad, and the Islamic State's leaders, as well as calls to jihad and loyalty to the caliphate.