When searching for "Sollayo Solaikili ringtone download," you will find two types of websites: legal aggregators and illegal ripping sites.
Tools like Zedge are commonly used to browse user-uploaded snippets of popular South Indian BGM and songs. DIY Ringtone: Sollayo Solaikili Ringtone Download
Android (example steps — modern Android may vary by skin/version) Sollayo Solaikili Ringtone Download