"Sorry, but I want to listen to this."
Translation:Sori, ond dw i eisiau wrando ar hyn.
There are quite a few variations on dw i in common colloquial use: dw i; wi; dwi; rwy i; rydw i; wy; ... Which one is used varies by region and often also by age group, situation and so on. dw i is widely taught as a simple standard as it is understood by all speakers of Welsh even if they usually use something different themselves.
yr wyf; rwyf; rwyf i/fi; are also in common use in formal or semi-formal writing (essays and academic writing, and some media articles, for example) and in formal or semi-formal speech in presentations and meetings.