I don't think you have to check literally every sound, you just have to look for drum sounds. The only exception to this is when you need to check bpm for complex rhythms, as it can be confusing.
osu file format v14
[General]
AudioFilename: audio.mp3
AudioLeadIn: 0
PreviewTime: -1
Countdown: 0
SampleSet: Soft
StackLeniency: 0.7
Mode: 0
LetterboxInBreaks: 0
WidescreenStoryboard: 1
[Editor]
Bookmarks: 46359,64303
DistanceSpacing: 0.9
BeatDivisor: 4
GridSize: 16
TimelineZoom: 1
[Metadata]
Title:Come and get Your Love
TitleUnicode:Come and get Your Love
Artist:Redbone
ArtistUnicode:Redbone
Creator:Disappear
Version:bpm test
Source:Gaurdians of the Galaxy
Tags:Gaurdians of the Galazy
BeatmapID:0
BeatmapSetID:-1
[Difficulty]
HPDrainRate:4
CircleSize:4
OverallDifficulty:7
ApproachRate:9
SliderMultiplier:1.40000000596046
SliderTickRate:1
[Events]
//Background and Video events
0,0,"guardians_of_the_galaxy_by_patrickbrown-d7tmtnn-feature.jpg",0,0
//Break Periods
//Storyboard Layer 0 (Background)
//Storyboard Layer 1 (Fail)
//Storyboard Layer 2 (Pass)
//Storyboard Layer 3 (Foreground)
//Storyboard Layer 4 (Overlay)
//Storyboard Sound Samples
[TimingPoints]
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75521,560.747663551402,4,2,0,100,1,0
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97866,560.747663551402,4,2,0,100,1,0
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122294,558.139534883721,4,2,0,100,1,0
135653,560.747663551402,4,2,0,100,1,0
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159889,555.555555555556,4,2,0,100,1,0
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[HitObjects]