The proper spelling for the phrase "am the trail" is "I'm on the trail." This phrase can be transcribed using the International Phonetic Alphabet (IPA) as /aɪm ɒn ðə treɪl/. The contraction "I'm" represents the contraction of the pronoun "I" and the verb "am" into one word. The word "on" is pronounced with a short "o" sound, and the sound represented by the symbol "ð" corresponds to the "th" sound in "the." Overall, it is important to pay attention to proper spelling and pronunciation to accurately convey meaning in communication.